./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:20:30,571 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:20:30,639 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 14:20:30,644 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:20:30,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:20:30,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:20:30,671 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:20:30,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:20:30,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:20:30,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:20:30,674 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:20:30,674 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:20:30,675 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:20:30,675 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:20:30,676 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:20:30,676 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:20:30,677 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:20:30,677 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:20:30,678 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:20:30,678 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:20:30,679 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:20:30,684 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:20:30,684 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 14:20:30,685 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 14:20:30,685 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:20:30,686 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:20:30,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:20:30,686 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:20:30,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:20:30,687 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 14:20:30,687 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 14:20:30,688 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 14:20:30,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:20:30,688 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 14:20:30,688 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:20:30,689 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:20:30,689 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:20:30,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:20:30,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:20:30,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:20:30,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:20:30,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:20:30,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:20:30,690 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:20:30,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:20:30,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:20:30,691 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:20:30,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:20:30,691 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_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2023-12-02 14:20:30,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:20:30,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:20:30,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:20:30,927 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:20:30,927 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:20:30,928 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2023-12-02 14:20:33,630 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:20:33,882 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:20:33,882 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2023-12-02 14:20:33,899 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/data/9723b536c/e7d4c470af9647d59d1e08db190f81b4/FLAG9887cd05f [2023-12-02 14:20:33,910 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/data/9723b536c/e7d4c470af9647d59d1e08db190f81b4 [2023-12-02 14:20:33,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:20:33,913 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:20:33,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:20:33,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:20:33,920 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:20:33,920 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:20:33" (1/1) ... [2023-12-02 14:20:33,921 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4314affd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:33, skipping insertion in model container [2023-12-02 14:20:33,922 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:20:33" (1/1) ... [2023-12-02 14:20:33,993 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:20:34,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:20:34,411 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) [2023-12-02 14:20:34,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5fcf73fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:34, skipping insertion in model container [2023-12-02 14:20:34,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:20:34,412 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 14:20:34,414 INFO L158 Benchmark]: Toolchain (without parser) took 499.69ms. Allocated memory is still 142.6MB. Free memory was 86.9MB in the beginning and 67.4MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 14:20:34,414 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 59.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:20:34,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 497.15ms. Allocated memory is still 142.6MB. Free memory was 86.6MB in the beginning and 67.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 14:20:34,417 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 107.0MB. Free memory is still 59.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 497.15ms. Allocated memory is still 142.6MB. Free memory was 86.6MB in the beginning and 67.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. 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_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:20:36,127 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:20:36,191 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 14:20:36,196 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:20:36,197 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:20:36,220 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:20:36,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:20:36,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:20:36,222 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:20:36,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:20:36,223 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:20:36,224 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:20:36,224 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:20:36,225 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:20:36,225 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:20:36,226 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:20:36,226 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 14:20:36,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 14:20:36,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:20:36,228 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:20:36,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:20:36,229 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:20:36,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:20:36,230 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 14:20:36,231 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 14:20:36,231 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 14:20:36,231 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:20:36,232 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 14:20:36,232 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 14:20:36,233 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 14:20:36,233 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:20:36,233 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:20:36,234 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:20:36,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:20:36,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 14:20:36,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:20:36,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:20:36,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:20:36,235 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:20:36,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:20:36,236 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 14:20:36,236 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 14:20:36,236 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:20:36,236 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:20:36,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:20:36,237 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_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2023-12-02 14:20:36,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:20:36,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:20:36,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:20:36,561 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:20:36,561 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:20:36,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2023-12-02 14:20:39,355 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:20:39,625 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:20:39,626 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2023-12-02 14:20:39,643 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/data/92de925ab/68487873513a4c2ea4debb5f58504ac2/FLAG2017b4fda [2023-12-02 14:20:39,657 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/data/92de925ab/68487873513a4c2ea4debb5f58504ac2 [2023-12-02 14:20:39,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:20:39,661 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:20:39,663 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:20:39,663 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:20:39,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:20:39,667 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:20:39" (1/1) ... [2023-12-02 14:20:39,668 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55fef152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:39, skipping insertion in model container [2023-12-02 14:20:39,669 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:20:39" (1/1) ... [2023-12-02 14:20:39,735 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:20:40,225 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:20:40,239 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 14:20:40,252 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:20:40,352 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:20:40,359 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:20:40,426 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:20:40,463 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:20:40,471 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:20:40,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:40 WrapperNode [2023-12-02 14:20:40,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:20:40,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:20:40,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:20:40,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:20:40,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:40" (1/1) ... [2023-12-02 14:20:40,513 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:40" (1/1) ... [2023-12-02 14:20:40,567 INFO L138 Inliner]: procedures = 179, calls = 280, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1017 [2023-12-02 14:20:40,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:20:40,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:20:40,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:20:40,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:20:40,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:40" (1/1) ... [2023-12-02 14:20:40,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:40" (1/1) ... [2023-12-02 14:20:40,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:40" (1/1) ... [2023-12-02 14:20:40,591 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:40" (1/1) ... [2023-12-02 14:20:40,654 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:40" (1/1) ... [2023-12-02 14:20:40,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:40" (1/1) ... [2023-12-02 14:20:40,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:40" (1/1) ... [2023-12-02 14:20:40,675 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:40" (1/1) ... [2023-12-02 14:20:40,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:20:40,686 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:20:40,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:20:40,686 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:20:40,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:40" (1/1) ... [2023-12-02 14:20:40,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:20:40,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:20:40,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:20:40,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:20:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 14:20:40,764 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 14:20:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 14:20:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 14:20:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 14:20:40,764 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 14:20:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:20:40,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:20:40,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 14:20:40,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:20:40,765 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 14:20:40,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 14:20:40,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:20:40,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 14:20:40,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 14:20:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:20:40,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:20:40,946 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:20:40,948 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:20:40,973 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 14:20:45,162 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:20:45,305 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:20:45,306 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-12-02 14:20:45,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:20:45 BoogieIcfgContainer [2023-12-02 14:20:45,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:20:45,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:20:45,309 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:20:45,312 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:20:45,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:20:39" (1/3) ... [2023-12-02 14:20:45,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748a269b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:20:45, skipping insertion in model container [2023-12-02 14:20:45,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:20:40" (2/3) ... [2023-12-02 14:20:45,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@748a269b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:20:45, skipping insertion in model container [2023-12-02 14:20:45,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:20:45" (3/3) ... [2023-12-02 14:20:45,314 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-1.i [2023-12-02 14:20:45,329 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:20:45,329 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 529 error locations. [2023-12-02 14:20:45,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:20:45,389 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;@4d2a1a86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:20:45,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 529 error locations. [2023-12-02 14:20:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 956 states, 422 states have (on average 2.537914691943128) internal successors, (1071), 949 states have internal predecessors, (1071), 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) [2023-12-02 14:20:45,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 14:20:45,400 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:45,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 14:20:45,401 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:20:45,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:45,405 INFO L85 PathProgramCache]: Analyzing trace with hash 53652, now seen corresponding path program 1 times [2023-12-02 14:20:45,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:20:45,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056753266] [2023-12-02 14:20:45,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:45,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:20:45,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:20:45,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:20:45,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 14:20:45,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:45,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:20:45,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:20:45,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:20:45,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:20:45,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:20:45,617 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:20:45,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056753266] [2023-12-02 14:20:45,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056753266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:45,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:45,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:20:45,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736722300] [2023-12-02 14:20:45,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:45,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:20:45,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:20:45,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:20:45,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:20:45,647 INFO L87 Difference]: Start difference. First operand has 956 states, 422 states have (on average 2.537914691943128) internal successors, (1071), 949 states have internal predecessors, (1071), 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 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:20:47,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:20:47,253 INFO L93 Difference]: Finished difference Result 950 states and 1005 transitions. [2023-12-02 14:20:47,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:20:47,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-12-02 14:20:47,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:20:47,274 INFO L225 Difference]: With dead ends: 950 [2023-12-02 14:20:47,274 INFO L226 Difference]: Without dead ends: 949 [2023-12-02 14:20:47,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:20:47,279 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 881 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:20:47,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 561 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 14:20:47,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2023-12-02 14:20:47,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 940. [2023-12-02 14:20:47,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 424 states have (on average 2.330188679245283) internal successors, (988), 934 states have internal predecessors, (988), 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) [2023-12-02 14:20:47,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 996 transitions. [2023-12-02 14:20:47,356 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 996 transitions. Word has length 2 [2023-12-02 14:20:47,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:20:47,356 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 996 transitions. [2023-12-02 14:20:47,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:20:47,357 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 996 transitions. [2023-12-02 14:20:47,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 14:20:47,357 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:47,357 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 14:20:47,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:20:47,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:20:47,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:20:47,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:47,559 INFO L85 PathProgramCache]: Analyzing trace with hash 53653, now seen corresponding path program 1 times [2023-12-02 14:20:47,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:20:47,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714372302] [2023-12-02 14:20:47,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:47,560 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:20:47,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:20:47,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:20:47,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 14:20:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:47,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:20:47,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:20:47,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:20:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:20:47,674 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:20:47,674 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:20:47,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714372302] [2023-12-02 14:20:47,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714372302] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:47,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:47,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:20:47,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086355051] [2023-12-02 14:20:47,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:47,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:20:47,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:20:47,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:20:47,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:20:47,677 INFO L87 Difference]: Start difference. First operand 940 states and 996 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:20:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:20:50,562 INFO L93 Difference]: Finished difference Result 1296 states and 1383 transitions. [2023-12-02 14:20:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:20:50,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-12-02 14:20:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:20:50,568 INFO L225 Difference]: With dead ends: 1296 [2023-12-02 14:20:50,568 INFO L226 Difference]: Without dead ends: 1296 [2023-12-02 14:20:50,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:20:50,570 INFO L413 NwaCegarLoop]: 738 mSDtfsCounter, 385 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:20:50,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 1208 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-12-02 14:20:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2023-12-02 14:20:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1109. [2023-12-02 14:20:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 594 states have (on average 2.3047138047138045) internal successors, (1369), 1103 states have internal predecessors, (1369), 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) [2023-12-02 14:20:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1377 transitions. [2023-12-02 14:20:50,601 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1377 transitions. Word has length 2 [2023-12-02 14:20:50,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:20:50,601 INFO L495 AbstractCegarLoop]: Abstraction has 1109 states and 1377 transitions. [2023-12-02 14:20:50,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:20:50,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1377 transitions. [2023-12-02 14:20:50,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 14:20:50,602 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:50,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 14:20:50,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 14:20:50,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:20:50,803 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:20:50,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:50,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1990944098, now seen corresponding path program 1 times [2023-12-02 14:20:50,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:20:50,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929213632] [2023-12-02 14:20:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:50,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:20:50,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:20:50,805 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:20:50,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 14:20:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:50,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 14:20:50,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:20:50,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:20:50,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:20:51,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:20:51,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 14:20:51,056 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:20:51,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:20:51,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:20:51,075 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:20:51,075 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:20:51,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929213632] [2023-12-02 14:20:51,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929213632] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:51,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:51,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:20:51,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524824508] [2023-12-02 14:20:51,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:51,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:20:51,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:20:51,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:20:51,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:20:51,078 INFO L87 Difference]: Start difference. First operand 1109 states and 1377 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:20:53,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:20:53,534 INFO L93 Difference]: Finished difference Result 1112 states and 1382 transitions. [2023-12-02 14:20:53,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:20:53,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-12-02 14:20:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:20:53,541 INFO L225 Difference]: With dead ends: 1112 [2023-12-02 14:20:53,541 INFO L226 Difference]: Without dead ends: 1112 [2023-12-02 14:20:53,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:20:53,542 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 966 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:20:53,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 282 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 14:20:53,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2023-12-02 14:20:53,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 929. [2023-12-02 14:20:53,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 424 states have (on average 2.30188679245283) internal successors, (976), 923 states have internal predecessors, (976), 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) [2023-12-02 14:20:53,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 984 transitions. [2023-12-02 14:20:53,559 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 984 transitions. Word has length 6 [2023-12-02 14:20:53,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:20:53,559 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 984 transitions. [2023-12-02 14:20:53,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:20:53,560 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 984 transitions. [2023-12-02 14:20:53,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 14:20:53,560 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:53,560 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:20:53,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-12-02 14:20:53,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:20:53,761 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:20:53,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:53,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1589724911, now seen corresponding path program 1 times [2023-12-02 14:20:53,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:20:53,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079231409] [2023-12-02 14:20:53,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:53,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:20:53,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:20:53,763 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:20:53,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-12-02 14:20:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:53,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:20:53,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:20:53,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:20:53,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:20:53,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:20:53,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:20:53,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079231409] [2023-12-02 14:20:53,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079231409] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:53,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:53,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:20:53,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523369801] [2023-12-02 14:20:53,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:53,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:20:53,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:20:53,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:20:53,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:20:53,910 INFO L87 Difference]: Start difference. First operand 929 states and 984 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 14:20:55,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:20:55,984 INFO L93 Difference]: Finished difference Result 1225 states and 1310 transitions. [2023-12-02 14:20:55,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:20:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-12-02 14:20:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:20:55,991 INFO L225 Difference]: With dead ends: 1225 [2023-12-02 14:20:55,991 INFO L226 Difference]: Without dead ends: 1225 [2023-12-02 14:20:55,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:20:55,992 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 881 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:20:55,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 971 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-12-02 14:20:55,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-12-02 14:20:56,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 882. [2023-12-02 14:20:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 424 states have (on average 2.1910377358490565) internal successors, (929), 876 states have internal predecessors, (929), 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) [2023-12-02 14:20:56,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 937 transitions. [2023-12-02 14:20:56,011 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 937 transitions. Word has length 7 [2023-12-02 14:20:56,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:20:56,012 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 937 transitions. [2023-12-02 14:20:56,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 14:20:56,012 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 937 transitions. [2023-12-02 14:20:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 14:20:56,012 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:56,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:20:56,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 14:20:56,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:20:56,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:20:56,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:56,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1589724910, now seen corresponding path program 1 times [2023-12-02 14:20:56,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:20:56,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018268513] [2023-12-02 14:20:56,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:56,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:20:56,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:20:56,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:20:56,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 14:20:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:56,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:20:56,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:20:56,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:20:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:20:56,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:20:56,340 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:20:56,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018268513] [2023-12-02 14:20:56,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018268513] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:56,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:56,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:20:56,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573868901] [2023-12-02 14:20:56,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:56,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:20:56,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:20:56,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:20:56,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:20:56,343 INFO L87 Difference]: Start difference. First operand 882 states and 937 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 14:20:59,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:20:59,091 INFO L93 Difference]: Finished difference Result 1295 states and 1383 transitions. [2023-12-02 14:20:59,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:20:59,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-12-02 14:20:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:20:59,098 INFO L225 Difference]: With dead ends: 1295 [2023-12-02 14:20:59,098 INFO L226 Difference]: Without dead ends: 1295 [2023-12-02 14:20:59,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:20:59,099 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 613 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:20:59,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1272 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 14:20:59,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2023-12-02 14:20:59,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 895. [2023-12-02 14:20:59,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 447 states have (on average 2.1834451901565997) internal successors, (976), 889 states have internal predecessors, (976), 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) [2023-12-02 14:20:59,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 984 transitions. [2023-12-02 14:20:59,121 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 984 transitions. Word has length 7 [2023-12-02 14:20:59,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:20:59,122 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 984 transitions. [2023-12-02 14:20:59,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-12-02 14:20:59,122 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 984 transitions. [2023-12-02 14:20:59,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 14:20:59,122 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:20:59,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:20:59,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 14:20:59,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:20:59,324 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr527ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:20:59,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:20:59,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1355457050, now seen corresponding path program 1 times [2023-12-02 14:20:59,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:20:59,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473086541] [2023-12-02 14:20:59,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:20:59,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:20:59,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:20:59,325 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:20:59,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 14:20:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:20:59,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:20:59,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:20:59,465 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:20:59,466 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:20:59,466 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:20:59,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-12-02 14:20:59,524 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:20:59,525 INFO L378 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 [2023-12-02 14:20:59,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:20:59,538 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:20:59,538 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:20:59,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473086541] [2023-12-02 14:20:59,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473086541] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:20:59,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:20:59,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:20:59,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933778108] [2023-12-02 14:20:59,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:20:59,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:20:59,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:20:59,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:20:59,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:20:59,541 INFO L87 Difference]: Start difference. First operand 895 states and 984 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:01,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:21:01,279 INFO L93 Difference]: Finished difference Result 1207 states and 1323 transitions. [2023-12-02 14:21:01,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:21:01,279 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-12-02 14:21:01,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:21:01,284 INFO L225 Difference]: With dead ends: 1207 [2023-12-02 14:21:01,284 INFO L226 Difference]: Without dead ends: 1207 [2023-12-02 14:21:01,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:21:01,285 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 330 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:21:01,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 2344 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 14:21:01,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1207 states. [2023-12-02 14:21:01,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1207 to 897. [2023-12-02 14:21:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 897 states, 449 states have (on average 2.178173719376392) internal successors, (978), 891 states have internal predecessors, (978), 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) [2023-12-02 14:21:01,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 986 transitions. [2023-12-02 14:21:01,308 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 986 transitions. Word has length 11 [2023-12-02 14:21:01,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:21:01,308 INFO L495 AbstractCegarLoop]: Abstraction has 897 states and 986 transitions. [2023-12-02 14:21:01,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:01,308 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 986 transitions. [2023-12-02 14:21:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 14:21:01,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:21:01,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:21:01,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 14:21:01,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:01,509 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:21:01,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:21:01,510 INFO L85 PathProgramCache]: Analyzing trace with hash -481040215, now seen corresponding path program 1 times [2023-12-02 14:21:01,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:21:01,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062075168] [2023-12-02 14:21:01,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:21:01,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:01,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:21:01,511 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:21:01,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 14:21:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:21:01,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:21:01,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:01,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:21:01,680 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:21:01,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062075168] [2023-12-02 14:21:01,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062075168] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:21:01,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:21:01,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:21:01,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802363172] [2023-12-02 14:21:01,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:21:01,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:21:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:21:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:21:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:21:01,682 INFO L87 Difference]: Start difference. First operand 897 states and 986 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2023-12-02 14:21:02,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:21:02,366 INFO L93 Difference]: Finished difference Result 858 states and 946 transitions. [2023-12-02 14:21:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:21:02,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 [2023-12-02 14:21:02,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:21:02,371 INFO L225 Difference]: With dead ends: 858 [2023-12-02 14:21:02,371 INFO L226 Difference]: Without dead ends: 858 [2023-12-02 14:21:02,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:21:02,372 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 70 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:21:02,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1485 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 14:21:02,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2023-12-02 14:21:02,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 858. [2023-12-02 14:21:02,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 434 states have (on average 2.161290322580645) internal successors, (938), 852 states have internal predecessors, (938), 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) [2023-12-02 14:21:02,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 946 transitions. [2023-12-02 14:21:02,389 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 946 transitions. Word has length 15 [2023-12-02 14:21:02,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:21:02,389 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 946 transitions. [2023-12-02 14:21:02,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2023-12-02 14:21:02,390 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 946 transitions. [2023-12-02 14:21:02,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 14:21:02,390 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:21:02,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:21:02,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 14:21:02,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:02,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:21:02,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:21:02,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1576817058, now seen corresponding path program 1 times [2023-12-02 14:21:02,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:21:02,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385544045] [2023-12-02 14:21:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:21:02,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:02,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:21:02,597 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:21:02,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 14:21:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:21:02,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:21:02,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:02,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:02,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:21:02,746 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:21:02,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385544045] [2023-12-02 14:21:02,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385544045] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:21:02,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:21:02,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:21:02,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401316005] [2023-12-02 14:21:02,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:21:02,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:21:02,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:21:02,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:21:02,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:21:02,748 INFO L87 Difference]: Start difference. First operand 858 states and 946 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:03,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:21:03,635 INFO L93 Difference]: Finished difference Result 844 states and 925 transitions. [2023-12-02 14:21:03,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:21:03,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2023-12-02 14:21:03,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:21:03,641 INFO L225 Difference]: With dead ends: 844 [2023-12-02 14:21:03,641 INFO L226 Difference]: Without dead ends: 844 [2023-12-02 14:21:03,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:21:03,642 INFO L413 NwaCegarLoop]: 736 mSDtfsCounter, 58 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:21:03,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2184 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 14:21:03,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2023-12-02 14:21:03,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 843. [2023-12-02 14:21:03,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 433 states have (on average 2.115473441108545) internal successors, (916), 837 states have internal predecessors, (916), 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) [2023-12-02 14:21:03,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 924 transitions. [2023-12-02 14:21:03,664 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 924 transitions. Word has length 17 [2023-12-02 14:21:03,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:21:03,665 INFO L495 AbstractCegarLoop]: Abstraction has 843 states and 924 transitions. [2023-12-02 14:21:03,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:03,665 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 924 transitions. [2023-12-02 14:21:03,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 14:21:03,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:21:03,666 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] [2023-12-02 14:21:03,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-12-02 14:21:03,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:03,867 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:21:03,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:21:03,867 INFO L85 PathProgramCache]: Analyzing trace with hash -206328208, now seen corresponding path program 1 times [2023-12-02 14:21:03,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:21:03,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081141943] [2023-12-02 14:21:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:21:03,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:03,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:21:03,868 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:21:03,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 14:21:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:21:03,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:21:04,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:04,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:21:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:04,058 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:21:04,058 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:21:04,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081141943] [2023-12-02 14:21:04,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081141943] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:21:04,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:21:04,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:21:04,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594648693] [2023-12-02 14:21:04,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:21:04,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:21:04,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:21:04,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:21:04,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:21:04,060 INFO L87 Difference]: Start difference. First operand 843 states and 924 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:06,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:21:06,252 INFO L93 Difference]: Finished difference Result 1182 states and 1293 transitions. [2023-12-02 14:21:06,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:21:06,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-12-02 14:21:06,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:21:06,258 INFO L225 Difference]: With dead ends: 1182 [2023-12-02 14:21:06,258 INFO L226 Difference]: Without dead ends: 1182 [2023-12-02 14:21:06,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:21:06,259 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 814 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:21:06,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 956 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 14:21:06,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2023-12-02 14:21:06,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 839. [2023-12-02 14:21:06,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 433 states have (on average 2.1062355658198615) internal successors, (912), 833 states have internal predecessors, (912), 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) [2023-12-02 14:21:06,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 920 transitions. [2023-12-02 14:21:06,272 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 920 transitions. Word has length 31 [2023-12-02 14:21:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:21:06,272 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 920 transitions. [2023-12-02 14:21:06,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:06,272 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 920 transitions. [2023-12-02 14:21:06,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 14:21:06,273 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:21:06,273 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] [2023-12-02 14:21:06,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-12-02 14:21:06,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:06,474 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:21:06,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:21:06,474 INFO L85 PathProgramCache]: Analyzing trace with hash -206328207, now seen corresponding path program 1 times [2023-12-02 14:21:06,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:21:06,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637082848] [2023-12-02 14:21:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:21:06,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:06,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:21:06,476 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:21:06,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-12-02 14:21:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:21:06,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 14:21:06,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:06,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:21:06,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:06,798 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:21:06,798 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:21:06,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637082848] [2023-12-02 14:21:06,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637082848] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:21:06,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:21:06,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:21:06,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573630812] [2023-12-02 14:21:06,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:21:06,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:21:06,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:21:06,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:21:06,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:21:06,800 INFO L87 Difference]: Start difference. First operand 839 states and 920 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:10,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:21:10,048 INFO L93 Difference]: Finished difference Result 1235 states and 1315 transitions. [2023-12-02 14:21:10,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:21:10,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-12-02 14:21:10,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:21:10,054 INFO L225 Difference]: With dead ends: 1235 [2023-12-02 14:21:10,054 INFO L226 Difference]: Without dead ends: 1235 [2023-12-02 14:21:10,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:21:10,055 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 548 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:21:10,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [548 Valid, 1253 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 14:21:10,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1235 states. [2023-12-02 14:21:10,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1235 to 835. [2023-12-02 14:21:10,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 433 states have (on average 2.096997690531178) internal successors, (908), 829 states have internal predecessors, (908), 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) [2023-12-02 14:21:10,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 916 transitions. [2023-12-02 14:21:10,068 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 916 transitions. Word has length 31 [2023-12-02 14:21:10,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:21:10,068 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 916 transitions. [2023-12-02 14:21:10,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:10,069 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 916 transitions. [2023-12-02 14:21:10,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 14:21:10,070 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:21:10,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:21:10,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-12-02 14:21:10,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:10,272 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:21:10,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:21:10,272 INFO L85 PathProgramCache]: Analyzing trace with hash 207748330, now seen corresponding path program 1 times [2023-12-02 14:21:10,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:21:10,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857766058] [2023-12-02 14:21:10,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:21:10,273 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:10,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:21:10,274 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:21:10,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-12-02 14:21:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:21:10,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:21:10,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:10,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:10,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:21:10,507 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:21:10,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857766058] [2023-12-02 14:21:10,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857766058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:21:10,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:21:10,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:21:10,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601582348] [2023-12-02 14:21:10,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:21:10,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:21:10,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:21:10,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:21:10,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:21:10,509 INFO L87 Difference]: Start difference. First operand 835 states and 916 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:11,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:21:11,386 INFO L93 Difference]: Finished difference Result 829 states and 906 transitions. [2023-12-02 14:21:11,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:21:11,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 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 47 [2023-12-02 14:21:11,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:21:11,392 INFO L225 Difference]: With dead ends: 829 [2023-12-02 14:21:11,392 INFO L226 Difference]: Without dead ends: 829 [2023-12-02 14:21:11,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:21:11,392 INFO L413 NwaCegarLoop]: 730 mSDtfsCounter, 23 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:21:11,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2170 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 14:21:11,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2023-12-02 14:21:11,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2023-12-02 14:21:11,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 427 states have (on average 2.1030444964871196) internal successors, (898), 823 states have internal predecessors, (898), 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) [2023-12-02 14:21:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 906 transitions. [2023-12-02 14:21:11,403 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 906 transitions. Word has length 47 [2023-12-02 14:21:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:21:11,403 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 906 transitions. [2023-12-02 14:21:11,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:11,404 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 906 transitions. [2023-12-02 14:21:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-12-02 14:21:11,405 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:21:11,405 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:21:11,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-12-02 14:21:11,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:11,606 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:21:11,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:21:11,607 INFO L85 PathProgramCache]: Analyzing trace with hash -2009397589, now seen corresponding path program 1 times [2023-12-02 14:21:11,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:21:11,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914441761] [2023-12-02 14:21:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:21:11,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:11,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:21:11,608 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:21:11,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 14:21:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:21:11,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:21:11,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:12,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:21:12,047 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:21:12,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914441761] [2023-12-02 14:21:12,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914441761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:21:12,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:21:12,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:21:12,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046778982] [2023-12-02 14:21:12,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:21:12,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:21:12,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:21:12,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:21:12,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:21:12,049 INFO L87 Difference]: Start difference. First operand 829 states and 906 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:13,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:21:13,110 INFO L93 Difference]: Finished difference Result 1167 states and 1266 transitions. [2023-12-02 14:21:13,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:21:13,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 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 51 [2023-12-02 14:21:13,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:21:13,118 INFO L225 Difference]: With dead ends: 1167 [2023-12-02 14:21:13,118 INFO L226 Difference]: Without dead ends: 1167 [2023-12-02 14:21:13,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:21:13,118 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 368 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:21:13,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1526 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 14:21:13,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2023-12-02 14:21:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1002. [2023-12-02 14:21:13,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 600 states have (on average 2.045) internal successors, (1227), 996 states have internal predecessors, (1227), 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) [2023-12-02 14:21:13,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1235 transitions. [2023-12-02 14:21:13,136 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1235 transitions. Word has length 51 [2023-12-02 14:21:13,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:21:13,137 INFO L495 AbstractCegarLoop]: Abstraction has 1002 states and 1235 transitions. [2023-12-02 14:21:13,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:13,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1235 transitions. [2023-12-02 14:21:13,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 14:21:13,138 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:21:13,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:21:13,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-12-02 14:21:13,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:13,340 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:21:13,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:21:13,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1183141797, now seen corresponding path program 1 times [2023-12-02 14:21:13,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:21:13,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195100345] [2023-12-02 14:21:13,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:21:13,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:13,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:21:13,342 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:21:13,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-12-02 14:21:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:21:13,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 14:21:13,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:13,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:21:13,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:21:14,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:21:14,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 14:21:14,067 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:21:14,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:21:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:14,079 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:21:14,079 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:21:14,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195100345] [2023-12-02 14:21:14,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195100345] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:21:14,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:21:14,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:21:14,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825478551] [2023-12-02 14:21:14,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:21:14,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:21:14,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:21:14,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:21:14,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:21:14,081 INFO L87 Difference]: Start difference. First operand 1002 states and 1235 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:16,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:21:16,761 INFO L93 Difference]: Finished difference Result 1370 states and 1729 transitions. [2023-12-02 14:21:16,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:21:16,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2023-12-02 14:21:16,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:21:16,769 INFO L225 Difference]: With dead ends: 1370 [2023-12-02 14:21:16,769 INFO L226 Difference]: Without dead ends: 1370 [2023-12-02 14:21:16,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:21:16,770 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1806 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 880 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1809 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:21:16,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1809 Valid, 345 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 880 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-12-02 14:21:16,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2023-12-02 14:21:16,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 941. [2023-12-02 14:21:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 577 states have (on average 1.9618717504332757) internal successors, (1132), 935 states have internal predecessors, (1132), 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) [2023-12-02 14:21:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1140 transitions. [2023-12-02 14:21:16,789 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1140 transitions. Word has length 54 [2023-12-02 14:21:16,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:21:16,790 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1140 transitions. [2023-12-02 14:21:16,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:16,790 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1140 transitions. [2023-12-02 14:21:16,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 14:21:16,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:21:16,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:21:16,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-12-02 14:21:16,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:16,991 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:21:16,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:21:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash 721422486, now seen corresponding path program 1 times [2023-12-02 14:21:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:21:16,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80358511] [2023-12-02 14:21:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:21:16,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:16,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:21:16,993 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:21:16,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 14:21:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:21:17,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:21:17,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:17,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:21:17,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 14:21:17,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-12-02 14:21:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:17,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:21:17,256 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:21:17,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80358511] [2023-12-02 14:21:17,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80358511] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:21:17,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:21:17,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:21:17,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489758212] [2023-12-02 14:21:17,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:21:17,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:21:17,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:21:17,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:21:17,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:21:17,258 INFO L87 Difference]: Start difference. First operand 941 states and 1140 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:21:19,644 INFO L93 Difference]: Finished difference Result 940 states and 1139 transitions. [2023-12-02 14:21:19,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:21:19,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2023-12-02 14:21:19,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:21:19,648 INFO L225 Difference]: With dead ends: 940 [2023-12-02 14:21:19,648 INFO L226 Difference]: Without dead ends: 940 [2023-12-02 14:21:19,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:21:19,649 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 3 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:21:19,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1817 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 14:21:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2023-12-02 14:21:19,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 940. [2023-12-02 14:21:19,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 577 states have (on average 1.9601386481802425) internal successors, (1131), 934 states have internal predecessors, (1131), 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) [2023-12-02 14:21:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1139 transitions. [2023-12-02 14:21:19,661 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1139 transitions. Word has length 58 [2023-12-02 14:21:19,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:21:19,661 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1139 transitions. [2023-12-02 14:21:19,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:19,662 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1139 transitions. [2023-12-02 14:21:19,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 14:21:19,662 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:21:19,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:21:19,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-12-02 14:21:19,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:19,863 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:21:19,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:21:19,863 INFO L85 PathProgramCache]: Analyzing trace with hash 721422487, now seen corresponding path program 1 times [2023-12-02 14:21:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:21:19,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1730387073] [2023-12-02 14:21:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:21:19,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:19,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:21:19,865 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:21:19,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-02 14:21:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:21:20,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 14:21:20,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:20,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:21:20,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 14:21:20,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 14:21:20,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-12-02 14:21:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:20,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:21:20,191 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:21:20,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1730387073] [2023-12-02 14:21:20,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1730387073] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:21:20,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:21:20,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:21:20,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010494012] [2023-12-02 14:21:20,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:21:20,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:21:20,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:21:20,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:21:20,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:21:20,193 INFO L87 Difference]: Start difference. First operand 940 states and 1139 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:21:23,479 INFO L93 Difference]: Finished difference Result 939 states and 1138 transitions. [2023-12-02 14:21:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:21:23,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2023-12-02 14:21:23,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:21:23,485 INFO L225 Difference]: With dead ends: 939 [2023-12-02 14:21:23,485 INFO L226 Difference]: Without dead ends: 939 [2023-12-02 14:21:23,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:21:23,486 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:21:23,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1858 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-12-02 14:21:23,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2023-12-02 14:21:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 939. [2023-12-02 14:21:23,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 576 states have (on average 1.9618055555555556) internal successors, (1130), 933 states have internal predecessors, (1130), 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) [2023-12-02 14:21:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1138 transitions. [2023-12-02 14:21:23,502 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1138 transitions. Word has length 58 [2023-12-02 14:21:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:21:23,503 INFO L495 AbstractCegarLoop]: Abstraction has 939 states and 1138 transitions. [2023-12-02 14:21:23,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:21:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1138 transitions. [2023-12-02 14:21:23,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 14:21:23,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:21:23,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:21:23,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-02 14:21:23,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:23,704 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:21:23,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:21:23,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1405937604, now seen corresponding path program 1 times [2023-12-02 14:21:23,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:21:23,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550856079] [2023-12-02 14:21:23,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:21:23,706 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 [2023-12-02 14:21:23,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:21:23,706 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:21:23,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-12-02 14:21:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:21:23,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:21:24,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:24,015 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:21:24,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:21:24,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550856079] [2023-12-02 14:21:24,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550856079] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:21:24,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:21:24,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:21:24,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186975839] [2023-12-02 14:21:24,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:21:24,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:21:24,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:21:24,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:21:24,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:21:24,017 INFO L87 Difference]: Start difference. First operand 939 states and 1138 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:21:24,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:21:24,909 INFO L93 Difference]: Finished difference Result 941 states and 1141 transitions. [2023-12-02 14:21:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:21:24,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2023-12-02 14:21:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:21:24,917 INFO L225 Difference]: With dead ends: 941 [2023-12-02 14:21:24,917 INFO L226 Difference]: Without dead ends: 941 [2023-12-02 14:21:24,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:21:24,917 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 1 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:21:24,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2109 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 14:21:24,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-12-02 14:21:24,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 941. [2023-12-02 14:21:24,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 577 states have (on average 1.9618717504332757) internal successors, (1132), 935 states have internal predecessors, (1132), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:21:24,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1141 transitions. [2023-12-02 14:21:24,933 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1141 transitions. Word has length 64 [2023-12-02 14:21:24,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:21:24,933 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1141 transitions. [2023-12-02 14:21:24,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:21:24,934 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1141 transitions. [2023-12-02 14:21:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 14:21:24,934 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:21:24,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:21:24,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-12-02 14:21:25,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:25,135 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:21:25,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:21:25,135 INFO L85 PathProgramCache]: Analyzing trace with hash -750621124, now seen corresponding path program 1 times [2023-12-02 14:21:25,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:21:25,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360197749] [2023-12-02 14:21:25,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:21:25,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:25,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:21:25,137 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:21:25,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-02 14:21:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:21:25,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:21:25,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:25,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:25,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:21:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:25,470 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:21:25,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360197749] [2023-12-02 14:21:25,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360197749] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:21:25,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1054842764] [2023-12-02 14:21:25,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:21:25,470 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:21:25,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:21:25,471 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:21:25,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2023-12-02 14:21:25,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:21:25,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:21:25,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:25,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:25,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:21:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:25,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1054842764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:21:25,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42418048] [2023-12-02 14:21:25,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:21:25,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:21:25,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:21:25,939 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:21:25,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 14:21:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:21:26,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:21:26,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:26,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:21:26,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:26,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42418048] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:21:26,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 14:21:26,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-12-02 14:21:26,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533014767] [2023-12-02 14:21:26,271 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 14:21:26,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 14:21:26,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:21:26,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 14:21:26,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:21:26,273 INFO L87 Difference]: Start difference. First operand 941 states and 1141 transitions. Second operand has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:21:27,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:21:27,477 INFO L93 Difference]: Finished difference Result 950 states and 1155 transitions. [2023-12-02 14:21:27,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 14:21:27,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 65 [2023-12-02 14:21:27,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:21:27,481 INFO L225 Difference]: With dead ends: 950 [2023-12-02 14:21:27,481 INFO L226 Difference]: Without dead ends: 950 [2023-12-02 14:21:27,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-12-02 14:21:27,482 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 6 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2807 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:21:27,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2807 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 14:21:27,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2023-12-02 14:21:27,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 949. [2023-12-02 14:21:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 584 states have (on average 1.9606164383561644) internal successors, (1145), 942 states have internal predecessors, (1145), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:21:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1154 transitions. [2023-12-02 14:21:27,506 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1154 transitions. Word has length 65 [2023-12-02 14:21:27,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:21:27,507 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1154 transitions. [2023-12-02 14:21:27,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:21:27,507 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1154 transitions. [2023-12-02 14:21:27,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 14:21:27,507 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:21:27,508 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:21:27,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-02 14:21:27,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2023-12-02 14:21:27,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 14:21:28,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:21:28,109 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:21:28,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:21:28,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1604806596, now seen corresponding path program 2 times [2023-12-02 14:21:28,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:21:28,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1095991653] [2023-12-02 14:21:28,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:21:28,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:21:28,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:21:28,111 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:21:28,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-12-02 14:21:28,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:21:28,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:21:28,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:21:28,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:28,556 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:28,556 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:21:28,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:28,687 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:21:28,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1095991653] [2023-12-02 14:21:28,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1095991653] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:21:28,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [312409728] [2023-12-02 14:21:28,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:21:28,687 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:21:28,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:21:28,688 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:21:28,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2023-12-02 14:21:29,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:21:29,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:21:29,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:21:29,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:30,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:21:30,057 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:21:30,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [312409728] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:21:30,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179532006] [2023-12-02 14:21:30,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:21:30,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:21:30,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:21:30,059 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:21:30,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 14:21:54,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:21:54,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:21:54,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 14:21:54,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:21:54,621 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:21:54,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:21:54,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 14:21:54,893 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:21:54,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 14:21:54,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-12-02 14:21:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 14:21:54,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:21:55,083 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 14:21:55,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-12-02 14:21:55,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179532006] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:21:55,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2023-12-02 14:21:55,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 10] total 23 [2023-12-02 14:21:55,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424954034] [2023-12-02 14:21:55,185 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2023-12-02 14:21:55,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 14:21:55,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:21:55,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 14:21:55,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=500, Unknown=11, NotChecked=0, Total=600 [2023-12-02 14:21:55,187 INFO L87 Difference]: Start difference. First operand 949 states and 1154 transitions. Second operand has 23 states, 20 states have (on average 6.5) internal successors, (130), 22 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 14:22:03,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:22:03,918 INFO L93 Difference]: Finished difference Result 1369 states and 1707 transitions. [2023-12-02 14:22:03,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 14:22:03,919 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 6.5) internal successors, (130), 22 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2023-12-02 14:22:03,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:22:03,924 INFO L225 Difference]: With dead ends: 1369 [2023-12-02 14:22:03,924 INFO L226 Difference]: Without dead ends: 1367 [2023-12-02 14:22:03,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=452, Invalid=2290, Unknown=14, NotChecked=0, Total=2756 [2023-12-02 14:22:03,925 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 727 mSDsluCounter, 4009 mSDsCounter, 0 mSdLazyCounter, 5167 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 5192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 5167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:22:03,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 4396 Invalid, 5192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 5167 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-02 14:22:03,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2023-12-02 14:22:03,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 957. [2023-12-02 14:22:03,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 593 states have (on average 1.9494097807757167) internal successors, (1156), 950 states have internal predecessors, (1156), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:22:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1165 transitions. [2023-12-02 14:22:03,942 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1165 transitions. Word has length 68 [2023-12-02 14:22:03,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:22:03,942 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1165 transitions. [2023-12-02 14:22:03,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 6.5) internal successors, (130), 22 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 14:22:03,942 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1165 transitions. [2023-12-02 14:22:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 14:22:03,943 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:22:03,943 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:22:03,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 14:22:04,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-12-02 14:22:04,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2023-12-02 14:22:04,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 14:22:04,544 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:22:04,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:22:04,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1326917571, now seen corresponding path program 1 times [2023-12-02 14:22:04,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:22:04,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443435126] [2023-12-02 14:22:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:22:04,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:22:04,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:22:04,546 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:22:04,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-02 14:22:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:22:04,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 14:22:04,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:22:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:22:04,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:22:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:22:05,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:22:05,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443435126] [2023-12-02 14:22:05,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443435126] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:22:05,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1884947085] [2023-12-02 14:22:05,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:22:05,428 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:22:05,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:22:05,429 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:22:05,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-12-02 14:22:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:22:06,017 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 14:22:06,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:22:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:22:06,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:22:06,132 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:22:06,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1884947085] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:22:06,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060810163] [2023-12-02 14:22:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:22:06,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:22:06,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:22:06,134 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:22:06,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 14:22:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:22:06,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 14:22:06,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:22:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:22:06,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:22:07,165 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:22:07,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060810163] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:22:07,165 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 14:22:07,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2023-12-02 14:22:07,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589333557] [2023-12-02 14:22:07,166 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 14:22:07,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 14:22:07,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:22:07,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 14:22:07,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 14:22:07,168 INFO L87 Difference]: Start difference. First operand 957 states and 1165 transitions. Second operand has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 14:22:13,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:22:13,469 INFO L93 Difference]: Finished difference Result 987 states and 1210 transitions. [2023-12-02 14:22:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 14:22:13,470 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 74 [2023-12-02 14:22:13,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:22:13,474 INFO L225 Difference]: With dead ends: 987 [2023-12-02 14:22:13,474 INFO L226 Difference]: Without dead ends: 984 [2023-12-02 14:22:13,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1628, Invalid=3342, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 14:22:13,476 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 26 mSDsluCounter, 10492 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 11193 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:22:13,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 11193 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-12-02 14:22:13,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2023-12-02 14:22:13,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 975. [2023-12-02 14:22:13,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 611 states have (on average 1.9296235679214402) internal successors, (1179), 968 states have internal predecessors, (1179), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:22:13,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1188 transitions. [2023-12-02 14:22:13,491 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1188 transitions. Word has length 74 [2023-12-02 14:22:13,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:22:13,491 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1188 transitions. [2023-12-02 14:22:13,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 14:22:13,491 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1188 transitions. [2023-12-02 14:22:13,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 14:22:13,492 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:22:13,492 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:22:13,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 14:22:13,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-12-02 14:22:13,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-12-02 14:22:14,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 14:22:14,093 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:22:14,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:22:14,094 INFO L85 PathProgramCache]: Analyzing trace with hash 511268925, now seen corresponding path program 2 times [2023-12-02 14:22:14,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:22:14,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797227888] [2023-12-02 14:22:14,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:22:14,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:22:14,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:22:14,095 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:22:14,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-12-02 14:22:14,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:22:14,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:22:14,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 14:22:14,577 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:22:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:22:15,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:22:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:22:17,290 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:22:17,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797227888] [2023-12-02 14:22:17,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797227888] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:22:17,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1969225490] [2023-12-02 14:22:17,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:22:17,290 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:22:17,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:22:17,291 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:22:17,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2023-12-02 14:22:19,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:22:19,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:22:19,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 14:22:19,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:22:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:22:19,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:22:19,774 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:22:19,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1969225490] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:22:19,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147926626] [2023-12-02 14:22:19,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:22:19,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:22:19,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:22:19,776 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:22:19,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-12-02 14:22:38,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:22:38,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:22:38,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 14:22:38,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:22:39,118 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:22:39,118 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:22:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:22:39,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147926626] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:22:39,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 14:22:39,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 26, 26] total 66 [2023-12-02 14:22:39,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015468331] [2023-12-02 14:22:39,438 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 14:22:39,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-12-02 14:22:39,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:22:39,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-12-02 14:22:39,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1088, Invalid=3202, Unknown=0, NotChecked=0, Total=4290 [2023-12-02 14:22:39,441 INFO L87 Difference]: Start difference. First operand 975 states and 1188 transitions. Second operand has 66 states, 64 states have (on average 1.953125) internal successors, (125), 66 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:22:57,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:22:57,982 INFO L93 Difference]: Finished difference Result 1034 states and 1291 transitions. [2023-12-02 14:22:57,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-12-02 14:22:57,983 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 64 states have (on average 1.953125) internal successors, (125), 66 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 86 [2023-12-02 14:22:57,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:22:57,987 INFO L225 Difference]: With dead ends: 1034 [2023-12-02 14:22:57,987 INFO L226 Difference]: Without dead ends: 1031 [2023-12-02 14:22:57,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=3690, Invalid=8742, Unknown=0, NotChecked=0, Total=12432 [2023-12-02 14:22:57,991 INFO L413 NwaCegarLoop]: 701 mSDtfsCounter, 54 mSDsluCounter, 18893 mSDsCounter, 0 mSdLazyCounter, 6008 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 19594 SdHoareTripleChecker+Invalid, 6086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 6008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:22:57,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 19594 Invalid, 6086 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 6008 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2023-12-02 14:22:57,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-12-02 14:22:58,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1011. [2023-12-02 14:22:58,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 647 states have (on average 1.8964451313755797) internal successors, (1227), 1004 states have internal predecessors, (1227), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 14:22:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1236 transitions. [2023-12-02 14:22:58,009 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1236 transitions. Word has length 86 [2023-12-02 14:22:58,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:22:58,010 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1236 transitions. [2023-12-02 14:22:58,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 64 states have (on average 1.953125) internal successors, (125), 66 states have internal predecessors, (125), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:22:58,010 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1236 transitions. [2023-12-02 14:22:58,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 14:22:58,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:22:58,011 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:22:58,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2023-12-02 14:22:58,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-12-02 14:22:58,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-12-02 14:22:58,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:22:58,612 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 526 more)] === [2023-12-02 14:22:58,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:22:58,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1586468925, now seen corresponding path program 3 times [2023-12-02 14:22:58,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:22:58,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1348234747] [2023-12-02 14:22:58,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:22:58,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 14:22:58,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:22:58,614 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 14:22:58,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-12-02 14:23:01,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-12-02 14:23:01,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:23:01,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 108 conjunts are in the unsatisfiable core [2023-12-02 14:23:01,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:23:01,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:23:01,238 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:23:01,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:23:01,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:23:01,266 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 14:23:01,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 14:23:01,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-12-02 14:23:01,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 14:23:02,037 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:23:02,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 14:23:02,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 14:23:02,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2023-12-02 14:23:02,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-12-02 14:23:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 14:23:02,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:23:03,483 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3385 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3385) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3386 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3385 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3385) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3386) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 14:23:03,488 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:23:03,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1348234747] [2023-12-02 14:23:03,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1348234747] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:23:03,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1316228723] [2023-12-02 14:23:03,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:23:03,489 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:23:03,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:23:03,489 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:23:03,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-12-02 14:28:12,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2023-12-02 14:28:12,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:28:12,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 110 conjunts are in the unsatisfiable core [2023-12-02 14:28:12,771 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:28:12,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:28:13,010 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:28:13,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:28:13,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:28:13,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 14:28:13,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-12-02 14:28:13,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-12-02 14:28:13,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 14:28:13,738 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:28:13,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 14:28:13,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 14:28:13,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-02 14:28:13,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-12-02 14:28:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 14:28:13,809 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:28:15,015 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3940 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3940) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_3940 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3939 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3940) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3939) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 14:28:15,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1316228723] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:28:15,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458721182] [2023-12-02 14:28:15,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 14:28:15,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:28:15,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:28:15,021 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:28:15,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b64215da-4201-4062-a7bb-67985ffe76cb/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process