./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX --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 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:14:06,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:14:06,528 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:14:06,534 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:14:06,535 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:14:06,561 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:14:06,562 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:14:06,563 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:14:06,564 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:14:06,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:14:06,565 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:14:06,566 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:14:06,566 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:14:06,567 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:14:06,568 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:14:06,568 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:14:06,569 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:14:06,570 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:14:06,570 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:14:06,571 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:14:06,572 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:14:06,573 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:14:06,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:14:06,574 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:14:06,575 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:14:06,575 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:14:06,576 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:14:06,577 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:14:06,577 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:14:06,578 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:14:06,578 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:14:06,578 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:14:06,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:14:06,579 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:14:06,580 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:14:06,580 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:14:06,581 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:14:06,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:14:06,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:14:06,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:06,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:14:06,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:14:06,583 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:14:06,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:14:06,583 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:14:06,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:14:06,584 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_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 [2023-11-12 00:14:06,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:14:06,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:14:06,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:14:06,984 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:14:06,986 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:14:06,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-12 00:14:10,154 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:14:10,569 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:14:10,570 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-12 00:14:10,588 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/data/098c1917c/2fe80df9638c4421945da9759d5bb812/FLAGd7d078996 [2023-11-12 00:14:10,604 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/data/098c1917c/2fe80df9638c4421945da9759d5bb812 [2023-11-12 00:14:10,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:14:10,609 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:14:10,610 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:10,611 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:14:10,618 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:14:10,619 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:10" (1/1) ... [2023-11-12 00:14:10,620 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b64a409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:10, skipping insertion in model container [2023-11-12 00:14:10,620 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:10" (1/1) ... [2023-11-12 00:14:10,695 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:14:11,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:11,411 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) [2023-11-12 00:14:11,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@12721fa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:11, skipping insertion in model container [2023-11-12 00:14:11,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:11,414 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 00:14:11,416 INFO L158 Benchmark]: Toolchain (without parser) took 806.26ms. Allocated memory is still 144.7MB. Free memory was 103.7MB in the beginning and 83.8MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 00:14:11,417 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 144.7MB. Free memory is still 117.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:14:11,419 INFO L158 Benchmark]: CACSL2BoogieTranslator took 803.47ms. Allocated memory is still 144.7MB. Free memory was 103.7MB in the beginning and 83.8MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-12 00:14:11,421 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 144.7MB. Free memory is still 117.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 803.47ms. Allocated memory is still 144.7MB. Free memory was 103.7MB in the beginning and 83.8MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX --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 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:14:13,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:14:14,082 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 00:14:14,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:14:14,089 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:14:14,115 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:14:14,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:14:14,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:14:14,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:14:14,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:14:14,119 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:14:14,119 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:14:14,120 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:14:14,121 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:14:14,121 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:14:14,122 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:14:14,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:14:14,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:14:14,135 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:14:14,136 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:14:14,136 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:14:14,137 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:14:14,140 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:14:14,141 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:14:14,141 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:14:14,142 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:14:14,142 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:14:14,143 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:14:14,143 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:14:14,143 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:14:14,145 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:14:14,145 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:14:14,146 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:14:14,146 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:14:14,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:14:14,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:14:14,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:14,148 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:14:14,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:14:14,148 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:14:14,148 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:14:14,149 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:14:14,149 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:14:14,149 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_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 99f48cdcb9a25adc64e4307e90599f4e37a0b97f677ff29ab3d60f24a1c8e980 [2023-11-12 00:14:14,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:14:14,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:14:14,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:14:14,627 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:14:14,627 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:14:14,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-12 00:14:17,819 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:14:18,205 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:14:18,206 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-2.i [2023-11-12 00:14:18,228 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/data/599da9d60/9782bc52a4cd4fedbcb7ef610796a284/FLAGa61804ecb [2023-11-12 00:14:18,241 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/data/599da9d60/9782bc52a4cd4fedbcb7ef610796a284 [2023-11-12 00:14:18,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:14:18,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:14:18,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:18,246 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:14:18,251 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:14:18,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:18" (1/1) ... [2023-11-12 00:14:18,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fad1f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:18, skipping insertion in model container [2023-11-12 00:14:18,254 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:18" (1/1) ... [2023-11-12 00:14:18,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:14:19,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:19,127 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 00:14:19,173 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:14:19,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:19,278 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:14:19,404 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:19,453 WARN L672 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:19,462 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:14:19,463 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:19 WrapperNode [2023-11-12 00:14:19,463 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:19,464 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:19,464 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:14:19,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:14:19,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:19" (1/1) ... [2023-11-12 00:14:19,549 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:19" (1/1) ... [2023-11-12 00:14:19,613 INFO L138 Inliner]: procedures = 179, calls = 331, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1184 [2023-11-12 00:14:19,613 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:19,614 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:14:19,614 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:14:19,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:14:19,625 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:19" (1/1) ... [2023-11-12 00:14:19,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:19" (1/1) ... [2023-11-12 00:14:19,634 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:19" (1/1) ... [2023-11-12 00:14:19,635 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:19" (1/1) ... [2023-11-12 00:14:19,708 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:19" (1/1) ... [2023-11-12 00:14:19,721 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:19" (1/1) ... [2023-11-12 00:14:19,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:19" (1/1) ... [2023-11-12 00:14:19,734 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:19" (1/1) ... [2023-11-12 00:14:19,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:14:19,747 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:14:19,747 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:14:19,747 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:14:19,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:19" (1/1) ... [2023-11-12 00:14:19,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:19,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:19,809 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:14:19,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:14:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-12 00:14:19,862 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-12 00:14:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-12 00:14:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:14:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 00:14:19,863 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 00:14:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:14:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:14:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:14:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:14:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-12 00:14:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:14:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:14:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 00:14:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:14:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:14:19,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:14:20,097 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:14:20,100 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:14:20,136 WARN L817 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-12 00:14:26,261 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:14:26,276 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:14:26,276 INFO L302 CfgBuilder]: Removed 72 assume(true) statements. [2023-11-12 00:14:26,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:26 BoogieIcfgContainer [2023-11-12 00:14:26,280 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:14:26,283 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:14:26,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:14:26,286 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:14:26,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:14:18" (1/3) ... [2023-11-12 00:14:26,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e8bff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:26, skipping insertion in model container [2023-11-12 00:14:26,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:19" (2/3) ... [2023-11-12 00:14:26,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e8bff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:26, skipping insertion in model container [2023-11-12 00:14:26,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:26" (3/3) ... [2023-11-12 00:14:26,290 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-2.i [2023-11-12 00:14:26,310 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:14:26,310 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2023-11-12 00:14:26,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:14:26,419 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;@29f5f8a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:14:26,419 INFO L358 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2023-11-12 00:14:26,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 1262 states, 623 states have (on average 2.2423756019261636) internal successors, (1397), 1255 states have internal predecessors, (1397), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-12 00:14:26,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:14:26,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:26,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:14:26,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 00:14:26,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:26,452 INFO L85 PathProgramCache]: Analyzing trace with hash 47731, now seen corresponding path program 1 times [2023-11-12 00:14:26,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:26,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550227220] [2023-11-12 00:14:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:26,467 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 [2023-11-12 00:14:26,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:26,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:26,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:26,677 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:14:26,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:26,756 INFO L351 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 [2023-11-12 00:14:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:26,780 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:26,780 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:26,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550227220] [2023-11-12 00:14:26,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550227220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:26,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:26,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:14:26,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292539127] [2023-11-12 00:14:26,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:26,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:14:26,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:26,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:14:26,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:26,830 INFO L87 Difference]: Start difference. First operand has 1262 states, 623 states have (on average 2.2423756019261636) internal successors, (1397), 1255 states have internal predecessors, (1397), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:29,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:29,616 INFO L93 Difference]: Finished difference Result 1434 states and 1509 transitions. [2023-11-12 00:14:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:29,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 00:14:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:29,645 INFO L225 Difference]: With dead ends: 1434 [2023-11-12 00:14:29,645 INFO L226 Difference]: Without dead ends: 1432 [2023-11-12 00:14:29,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:29,651 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1167 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:29,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1170 Valid, 914 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-12 00:14:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2023-11-12 00:14:29,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1244. [2023-11-12 00:14:29,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 623 states have (on average 2.091492776886035) internal successors, (1303), 1238 states have internal predecessors, (1303), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:14:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1311 transitions. [2023-11-12 00:14:29,766 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1311 transitions. Word has length 3 [2023-11-12 00:14:29,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:29,767 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1311 transitions. [2023-11-12 00:14:29,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:29,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1311 transitions. [2023-11-12 00:14:29,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-12 00:14:29,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:29,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-12 00:14:29,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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)] Ended with exit code 0 [2023-11-12 00:14:29,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:29,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 00:14:29,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:29,980 INFO L85 PathProgramCache]: Analyzing trace with hash 47732, now seen corresponding path program 1 times [2023-11-12 00:14:29,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:29,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69295291] [2023-11-12 00:14:29,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:29,988 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 [2023-11-12 00:14:29,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:29,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:29,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:30,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:14:30,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:30,184 INFO L351 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 [2023-11-12 00:14:30,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:30,196 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:30,196 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:30,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69295291] [2023-11-12 00:14:30,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69295291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:30,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:30,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:14:30,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76282138] [2023-11-12 00:14:30,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:30,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:14:30,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:30,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:14:30,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:30,201 INFO L87 Difference]: Start difference. First operand 1244 states and 1311 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:34,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:34,829 INFO L93 Difference]: Finished difference Result 1838 states and 1947 transitions. [2023-11-12 00:14:34,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:34,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-12 00:14:34,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:34,840 INFO L225 Difference]: With dead ends: 1838 [2023-11-12 00:14:34,841 INFO L226 Difference]: Without dead ends: 1838 [2023-11-12 00:14:34,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:34,842 INFO L413 NwaCegarLoop]: 1023 mSDtfsCounter, 634 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:34,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1710 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-12 00:14:34,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2023-11-12 00:14:34,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1450. [2023-11-12 00:14:34,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 830 states have (on average 2.0734939759036144) internal successors, (1721), 1444 states have internal predecessors, (1721), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:14:34,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 1729 transitions. [2023-11-12 00:14:34,908 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 1729 transitions. Word has length 3 [2023-11-12 00:14:34,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:34,909 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 1729 transitions. [2023-11-12 00:14:34,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:34,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 1729 transitions. [2023-11-12 00:14:34,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-12 00:14:34,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:34,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:34,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:35,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:35,120 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 00:14:35,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:35,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1130822653, now seen corresponding path program 1 times [2023-11-12 00:14:35,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:35,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986790885] [2023-11-12 00:14:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:35,122 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 [2023-11-12 00:14:35,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:35,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:35,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:35,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 00:14:35,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:35,359 INFO L351 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 [2023-11-12 00:14:35,368 INFO L351 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 [2023-11-12 00:14:35,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:14:35,475 INFO L351 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 [2023-11-12 00:14:35,501 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-12 00:14:35,502 INFO L351 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 [2023-11-12 00:14:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:35,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:35,536 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:35,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986790885] [2023-11-12 00:14:35,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986790885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:35,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:35,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:14:35,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697585846] [2023-11-12 00:14:35,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:35,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:14:35,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:35,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:14:35,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:35,540 INFO L87 Difference]: Start difference. First operand 1450 states and 1729 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:39,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:39,900 INFO L93 Difference]: Finished difference Result 1632 states and 1922 transitions. [2023-11-12 00:14:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:14:39,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-12 00:14:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:39,910 INFO L225 Difference]: With dead ends: 1632 [2023-11-12 00:14:39,911 INFO L226 Difference]: Without dead ends: 1632 [2023-11-12 00:14:39,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:39,912 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1464 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1467 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:39,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1467 Valid, 530 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-12 00:14:39,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-12 00:14:39,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1233. [2023-11-12 00:14:39,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 623 states have (on average 2.07223113964687) internal successors, (1291), 1227 states have internal predecessors, (1291), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:14:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1299 transitions. [2023-11-12 00:14:39,949 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1299 transitions. Word has length 7 [2023-11-12 00:14:39,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:39,949 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1299 transitions. [2023-11-12 00:14:39,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:39,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1299 transitions. [2023-11-12 00:14:39,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:14:39,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:39,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:39,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:40,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:40,164 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 00:14:40,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:40,165 INFO L85 PathProgramCache]: Analyzing trace with hash 695763858, now seen corresponding path program 1 times [2023-11-12 00:14:40,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:40,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5231755] [2023-11-12 00:14:40,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:40,168 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 [2023-11-12 00:14:40,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:40,170 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:40,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:40,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:40,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:14:40,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:40,371 INFO L351 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 [2023-11-12 00:14:40,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:40,390 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:40,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:40,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5231755] [2023-11-12 00:14:40,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5231755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:40,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:40,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:14:40,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631271638] [2023-11-12 00:14:40,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:40,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:14:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:14:40,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:40,394 INFO L87 Difference]: Start difference. First operand 1233 states and 1299 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:43,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:43,389 INFO L93 Difference]: Finished difference Result 1566 states and 1662 transitions. [2023-11-12 00:14:43,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:43,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 00:14:43,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:43,400 INFO L225 Difference]: With dead ends: 1566 [2023-11-12 00:14:43,400 INFO L226 Difference]: Without dead ends: 1566 [2023-11-12 00:14:43,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:43,402 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 979 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1504 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:43,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [982 Valid, 1504 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-12 00:14:43,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2023-11-12 00:14:43,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1186. [2023-11-12 00:14:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 623 states have (on average 1.9967897271268058) internal successors, (1244), 1180 states have internal predecessors, (1244), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:14:43,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1252 transitions. [2023-11-12 00:14:43,437 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1252 transitions. Word has length 8 [2023-11-12 00:14:43,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:43,437 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1252 transitions. [2023-11-12 00:14:43,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:43,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1252 transitions. [2023-11-12 00:14:43,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-12 00:14:43,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:43,438 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:43,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:43,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:43,650 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 00:14:43,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:43,651 INFO L85 PathProgramCache]: Analyzing trace with hash 695763859, now seen corresponding path program 1 times [2023-11-12 00:14:43,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:43,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202820431] [2023-11-12 00:14:43,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:43,652 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 [2023-11-12 00:14:43,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:43,653 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:43,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:43,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:14:43,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:43,826 INFO L351 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 [2023-11-12 00:14:43,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:43,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:43,854 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:43,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202820431] [2023-11-12 00:14:43,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202820431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:43,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:43,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:14:43,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179577830] [2023-11-12 00:14:43,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:43,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:14:43,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:43,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:14:43,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:43,857 INFO L87 Difference]: Start difference. First operand 1186 states and 1252 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:47,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:47,806 INFO L93 Difference]: Finished difference Result 1648 states and 1747 transitions. [2023-11-12 00:14:47,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:47,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-12 00:14:47,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:47,816 INFO L225 Difference]: With dead ends: 1648 [2023-11-12 00:14:47,816 INFO L226 Difference]: Without dead ends: 1648 [2023-11-12 00:14:47,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:47,817 INFO L413 NwaCegarLoop]: 1355 mSDtfsCounter, 682 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:47,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1881 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-12 00:14:47,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2023-11-12 00:14:47,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1208. [2023-11-12 00:14:47,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 655 states have (on average 1.984732824427481) internal successors, (1300), 1202 states have internal predecessors, (1300), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:14:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1308 transitions. [2023-11-12 00:14:47,853 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1308 transitions. Word has length 8 [2023-11-12 00:14:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:47,854 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 1308 transitions. [2023-11-12 00:14:47,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1308 transitions. [2023-11-12 00:14:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:14:47,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:47,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:47,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:48,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:48,067 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 00:14:48,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:48,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2045817064, now seen corresponding path program 1 times [2023-11-12 00:14:48,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:48,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308034955] [2023-11-12 00:14:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:48,068 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 [2023-11-12 00:14:48,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:48,069 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:48,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:48,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:14:48,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:48,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:48,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:48,341 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:48,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308034955] [2023-11-12 00:14:48,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308034955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:48,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:48,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:14:48,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407695936] [2023-11-12 00:14:48,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:48,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:14:48,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:48,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:14:48,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:48,344 INFO L87 Difference]: Start difference. First operand 1208 states and 1308 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:49,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:49,438 INFO L93 Difference]: Finished difference Result 1861 states and 2005 transitions. [2023-11-12 00:14:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:14:49,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:14:49,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:49,449 INFO L225 Difference]: With dead ends: 1861 [2023-11-12 00:14:49,449 INFO L226 Difference]: Without dead ends: 1861 [2023-11-12 00:14:49,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:14:49,450 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 761 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3682 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:49,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 3682 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 00:14:49,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2023-11-12 00:14:49,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1458. [2023-11-12 00:14:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 905 states have (on average 1.9502762430939227) internal successors, (1765), 1452 states have internal predecessors, (1765), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:14:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1773 transitions. [2023-11-12 00:14:49,491 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1773 transitions. Word has length 13 [2023-11-12 00:14:49,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:49,491 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 1773 transitions. [2023-11-12 00:14:49,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1773 transitions. [2023-11-12 00:14:49,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-12 00:14:49,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:49,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:49,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:49,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:49,705 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 00:14:49,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:49,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1459496966, now seen corresponding path program 1 times [2023-11-12 00:14:49,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:49,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197469114] [2023-11-12 00:14:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:49,706 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 [2023-11-12 00:14:49,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:49,708 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:49,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:49,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:14:49,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:49,906 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:49,906 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:49,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197469114] [2023-11-12 00:14:49,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197469114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:49,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:49,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:14:49,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673904072] [2023-11-12 00:14:49,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:49,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:14:49,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:49,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:14:49,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:49,908 INFO L87 Difference]: Start difference. First operand 1458 states and 1773 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:49,945 INFO L93 Difference]: Finished difference Result 1398 states and 1687 transitions. [2023-11-12 00:14:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:49,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-12 00:14:49,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:49,952 INFO L225 Difference]: With dead ends: 1398 [2023-11-12 00:14:49,953 INFO L226 Difference]: Without dead ends: 1398 [2023-11-12 00:14:49,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:49,954 INFO L413 NwaCegarLoop]: 1179 mSDtfsCounter, 81 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2286 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:49,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2286 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:14:49,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1398 states. [2023-11-12 00:14:49,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1398 to 1398. [2023-11-12 00:14:49,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 869 states have (on average 1.9321058688147297) internal successors, (1679), 1392 states have internal predecessors, (1679), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:14:49,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 1687 transitions. [2023-11-12 00:14:49,987 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 1687 transitions. Word has length 13 [2023-11-12 00:14:49,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:49,988 INFO L495 AbstractCegarLoop]: Abstraction has 1398 states and 1687 transitions. [2023-11-12 00:14:49,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:49,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 1687 transitions. [2023-11-12 00:14:49,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-12 00:14:49,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:49,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:50,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:50,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:50,201 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr365REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 00:14:50,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:50,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1877695967, now seen corresponding path program 1 times [2023-11-12 00:14:50,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:50,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143020761] [2023-11-12 00:14:50,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:50,203 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 [2023-11-12 00:14:50,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:50,210 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:50,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:50,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:14:50,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:50,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:50,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:50,415 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:50,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143020761] [2023-11-12 00:14:50,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143020761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:50,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:50,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:14:50,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923760239] [2023-11-12 00:14:50,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:50,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:14:50,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:14:50,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:50,417 INFO L87 Difference]: Start difference. First operand 1398 states and 1687 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:50,505 INFO L93 Difference]: Finished difference Result 1370 states and 1631 transitions. [2023-11-12 00:14:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:14:50,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-12 00:14:50,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:50,511 INFO L225 Difference]: With dead ends: 1370 [2023-11-12 00:14:50,512 INFO L226 Difference]: Without dead ends: 1370 [2023-11-12 00:14:50,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:14:50,513 INFO L413 NwaCegarLoop]: 1134 mSDtfsCounter, 62 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:50,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3368 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2023-11-12 00:14:50,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1368. [2023-11-12 00:14:50,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 853 states have (on average 1.9003516998827668) internal successors, (1621), 1362 states have internal predecessors, (1621), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:14:50,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1629 transitions. [2023-11-12 00:14:50,542 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1629 transitions. Word has length 15 [2023-11-12 00:14:50,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:50,542 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 1629 transitions. [2023-11-12 00:14:50,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:50,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1629 transitions. [2023-11-12 00:14:50,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-12 00:14:50,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:50,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:50,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:50,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:50,756 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr632ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 00:14:50,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:50,756 INFO L85 PathProgramCache]: Analyzing trace with hash 816098230, now seen corresponding path program 1 times [2023-11-12 00:14:50,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:50,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808662836] [2023-11-12 00:14:50,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:50,757 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 [2023-11-12 00:14:50,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:50,758 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:50,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:50,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:14:50,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:50,986 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 00:14:50,987 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 00:14:50,988 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-12 00:14:50,991 INFO L351 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 30 treesize of output 39 [2023-11-12 00:14:51,057 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-12 00:14:51,058 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-12 00:14:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:51,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:51,075 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:51,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808662836] [2023-11-12 00:14:51,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808662836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:51,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:51,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:14:51,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918939691] [2023-11-12 00:14:51,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:51,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:14:51,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:51,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:14:51,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:51,077 INFO L87 Difference]: Start difference. First operand 1368 states and 1629 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:52,889 INFO L93 Difference]: Finished difference Result 1808 states and 2130 transitions. [2023-11-12 00:14:52,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:14:52,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-11-12 00:14:52,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:52,897 INFO L225 Difference]: With dead ends: 1808 [2023-11-12 00:14:52,897 INFO L226 Difference]: Without dead ends: 1808 [2023-11-12 00:14:52,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:14:52,898 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 428 mSDsluCounter, 2120 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:52,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 3237 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 00:14:52,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2023-11-12 00:14:52,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1367. [2023-11-12 00:14:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 852 states have (on average 1.9002347417840375) internal successors, (1619), 1361 states have internal predecessors, (1619), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:14:52,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1627 transitions. [2023-11-12 00:14:52,933 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1627 transitions. Word has length 16 [2023-11-12 00:14:52,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:52,933 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 1627 transitions. [2023-11-12 00:14:52,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:52,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1627 transitions. [2023-11-12 00:14:52,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-12 00:14:52,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:52,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:52,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:53,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:53,147 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 00:14:53,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:53,148 INFO L85 PathProgramCache]: Analyzing trace with hash -168464001, now seen corresponding path program 1 times [2023-11-12 00:14:53,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:53,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319365352] [2023-11-12 00:14:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:53,149 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 [2023-11-12 00:14:53,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:53,156 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:53,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:53,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-12 00:14:53,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:53,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:53,442 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:53,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319365352] [2023-11-12 00:14:53,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319365352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:53,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:53,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:14:53,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024511228] [2023-11-12 00:14:53,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:53,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:14:53,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:53,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:14:53,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:53,447 INFO L87 Difference]: Start difference. First operand 1367 states and 1627 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:53,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:53,487 INFO L93 Difference]: Finished difference Result 1307 states and 1541 transitions. [2023-11-12 00:14:53,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:14:53,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-12 00:14:53,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:53,494 INFO L225 Difference]: With dead ends: 1307 [2023-11-12 00:14:53,495 INFO L226 Difference]: Without dead ends: 1307 [2023-11-12 00:14:53,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:14:53,496 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 81 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:53,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 2130 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 00:14:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2023-11-12 00:14:53,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2023-11-12 00:14:53,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 816 states have (on average 1.8786764705882353) internal successors, (1533), 1301 states have internal predecessors, (1533), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:14:53,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1541 transitions. [2023-11-12 00:14:53,527 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1541 transitions. Word has length 18 [2023-11-12 00:14:53,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:53,527 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1541 transitions. [2023-11-12 00:14:53,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:53,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1541 transitions. [2023-11-12 00:14:53,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 00:14:53,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:53,532 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] [2023-11-12 00:14:53,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:53,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:53,747 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 00:14:53,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:53,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1314847992, now seen corresponding path program 1 times [2023-11-12 00:14:53,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:53,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1047200247] [2023-11-12 00:14:53,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:53,749 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 [2023-11-12 00:14:53,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:53,751 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:53,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:53,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:14:53,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:54,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:54,027 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:54,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1047200247] [2023-11-12 00:14:54,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1047200247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:54,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:54,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 00:14:54,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286036173] [2023-11-12 00:14:54,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:54,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:14:54,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:54,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:14:54,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:54,031 INFO L87 Difference]: Start difference. First operand 1307 states and 1541 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:54,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:54,131 INFO L93 Difference]: Finished difference Result 1279 states and 1485 transitions. [2023-11-12 00:14:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:14:54,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-12 00:14:54,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:54,138 INFO L225 Difference]: With dead ends: 1279 [2023-11-12 00:14:54,139 INFO L226 Difference]: Without dead ends: 1279 [2023-11-12 00:14:54,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:14:54,140 INFO L413 NwaCegarLoop]: 1056 mSDtfsCounter, 62 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:54,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 3134 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 00:14:54,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2023-11-12 00:14:54,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1277. [2023-11-12 00:14:54,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 800 states have (on average 1.84375) internal successors, (1475), 1271 states have internal predecessors, (1475), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:14:54,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 1483 transitions. [2023-11-12 00:14:54,164 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 1483 transitions. Word has length 20 [2023-11-12 00:14:54,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:54,165 INFO L495 AbstractCegarLoop]: Abstraction has 1277 states and 1483 transitions. [2023-11-12 00:14:54,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:54,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 1483 transitions. [2023-11-12 00:14:54,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-12 00:14:54,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:54,167 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] [2023-11-12 00:14:54,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:54,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:54,384 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 00:14:54,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:54,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685766, now seen corresponding path program 1 times [2023-11-12 00:14:54,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:54,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301443399] [2023-11-12 00:14:54,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:54,385 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 [2023-11-12 00:14:54,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:54,386 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:54,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:54,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 00:14:54,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:54,605 INFO L351 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 [2023-11-12 00:14:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:54,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:54,705 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:54,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301443399] [2023-11-12 00:14:54,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301443399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:54,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:54,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:14:54,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867847298] [2023-11-12 00:14:54,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:54,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:14:54,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:54,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:14:54,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:54,708 INFO L87 Difference]: Start difference. First operand 1277 states and 1483 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:58,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:58,106 INFO L93 Difference]: Finished difference Result 1666 states and 1986 transitions. [2023-11-12 00:14:58,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:14:58,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-12 00:14:58,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:58,117 INFO L225 Difference]: With dead ends: 1666 [2023-11-12 00:14:58,119 INFO L226 Difference]: Without dead ends: 1666 [2023-11-12 00:14:58,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:14:58,122 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 826 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1486 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:58,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1486 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-12 00:14:58,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1666 states. [2023-11-12 00:14:58,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1666 to 1273. [2023-11-12 00:14:58,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 800 states have (on average 1.83375) internal successors, (1467), 1267 states have internal predecessors, (1467), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-12 00:14:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1475 transitions. [2023-11-12 00:14:58,153 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1475 transitions. Word has length 34 [2023-11-12 00:14:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:58,154 INFO L495 AbstractCegarLoop]: Abstraction has 1273 states and 1475 transitions. [2023-11-12 00:14:58,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 00:14:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1475 transitions. [2023-11-12 00:14:58,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-12 00:14:58,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:58,159 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] [2023-11-12 00:14:58,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:58,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:58,373 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2023-11-12 00:14:58,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:58,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1346685767, now seen corresponding path program 1 times [2023-11-12 00:14:58,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:14:58,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307975075] [2023-11-12 00:14:58,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:58,374 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 [2023-11-12 00:14:58,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:14:58,376 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:14:58,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a708e48-1ea9-4238-be07-351bbc2a9835/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:14:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:58,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 00:14:58,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:58,618 INFO L351 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 [2023-11-12 00:14:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:14:58,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:58,889 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:14:58,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307975075] [2023-11-12 00:14:58,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307975075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:58,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:58,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:14:58,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614887824] [2023-11-12 00:14:58,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:58,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:14:58,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:14:58,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:14:58,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 00:14:58,891 INFO L87 Difference]: Start difference. First operand 1273 states and 1475 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)