./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --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_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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_021cc993-264d-482a-a0b3-a4ae9778176e/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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:04:46,733 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:04:46,799 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 13:04:46,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:04:46,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:04:46,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:04:46,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:04:46,829 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:04:46,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:04:46,830 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:04:46,830 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:04:46,831 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:04:46,832 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:04:46,832 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:04:46,833 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:04:46,833 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:04:46,834 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:04:46,834 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:04:46,835 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:04:46,835 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:04:46,836 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:04:46,836 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:04:46,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 13:04:46,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 13:04:46,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:04:46,838 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:04:46,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:04:46,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:04:46,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:04:46,840 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 13:04:46,840 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 13:04:46,840 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 13:04:46,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:04:46,841 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:04:46,841 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:04:46,841 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:04:46,842 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:04:46,842 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:04:46,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:04:46,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:04:46,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:04:46,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:04:46,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:04:46,843 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:04:46,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:04:46,843 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:04:46,844 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:04:46,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:04:46,844 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_021cc993-264d-482a-a0b3-a4ae9778176e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2023-12-02 13:04:47,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:04:47,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:04:47,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:04:47,069 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:04:47,070 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:04:47,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-12-02 13:04:49,891 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:04:50,067 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:04:50,068 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-12-02 13:04:50,077 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/data/725b4806d/620ca96336d944d5ab487e371deeded7/FLAG1e2a550ab [2023-12-02 13:04:50,092 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/data/725b4806d/620ca96336d944d5ab487e371deeded7 [2023-12-02 13:04:50,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:04:50,096 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:04:50,097 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:04:50,098 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:04:50,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:04:50,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:04:50" (1/1) ... [2023-12-02 13:04:50,103 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b070d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:50, skipping insertion in model container [2023-12-02 13:04:50,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:04:50" (1/1) ... [2023-12-02 13:04:50,130 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:04:50,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:04:50,334 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 13:04:50,335 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4a4da897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:50, skipping insertion in model container [2023-12-02 13:04:50,335 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:04:50,335 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 13:04:50,337 INFO L158 Benchmark]: Toolchain (without parser) took 240.58ms. Allocated memory is still 125.8MB. Free memory was 87.1MB in the beginning and 76.9MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-12-02 13:04:50,338 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:04:50,339 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.98ms. Allocated memory is still 125.8MB. Free memory was 86.7MB in the beginning and 76.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 13:04:50,340 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 125.8MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 237.98ms. Allocated memory is still 125.8MB. Free memory was 86.7MB in the beginning and 76.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 79]: 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_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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_021cc993-264d-482a-a0b3-a4ae9778176e/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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:04:52,085 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:04:52,150 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 13:04:52,155 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:04:52,156 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:04:52,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:04:52,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:04:52,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:04:52,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:04:52,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:04:52,181 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:04:52,181 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:04:52,182 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:04:52,182 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:04:52,183 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:04:52,183 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:04:52,184 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 13:04:52,185 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 13:04:52,185 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:04:52,186 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:04:52,186 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:04:52,187 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:04:52,187 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:04:52,188 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 13:04:52,188 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 13:04:52,189 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 13:04:52,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:04:52,190 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:04:52,190 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:04:52,190 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:04:52,191 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:04:52,191 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:04:52,191 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:04:52,192 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:04:52,192 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:04:52,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:04:52,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:04:52,193 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:04:52,193 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:04:52,193 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:04:52,193 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:04:52,194 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:04:52,194 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:04:52,194 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:04:52,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:04:52,194 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_021cc993-264d-482a-a0b3-a4ae9778176e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2023-12-02 13:04:52,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:04:52,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:04:52,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:04:52,511 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:04:52,512 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:04:52,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-12-02 13:04:55,416 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:04:55,614 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:04:55,615 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-12-02 13:04:55,624 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/data/e44df14fa/9dc3226bd373463695d9bbbf76e24c2a/FLAG55ae0599c [2023-12-02 13:04:55,641 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/data/e44df14fa/9dc3226bd373463695d9bbbf76e24c2a [2023-12-02 13:04:55,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:04:55,646 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:04:55,648 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:04:55,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:04:55,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:04:55,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:04:55" (1/1) ... [2023-12-02 13:04:55,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e903ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:55, skipping insertion in model container [2023-12-02 13:04:55,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:04:55" (1/1) ... [2023-12-02 13:04:55,689 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:04:55,904 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:04:55,923 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 13:04:55,929 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:04:55,952 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:04:55,962 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:04:55,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:04:56,021 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:04:56,022 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:56 WrapperNode [2023-12-02 13:04:56,022 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:04:56,024 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:04:56,024 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:04:56,024 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:04:56,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:56" (1/1) ... [2023-12-02 13:04:56,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:56" (1/1) ... [2023-12-02 13:04:56,078 INFO L138 Inliner]: procedures = 27, calls = 42, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 191 [2023-12-02 13:04:56,079 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:04:56,080 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:04:56,080 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:04:56,080 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:04:56,091 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:56" (1/1) ... [2023-12-02 13:04:56,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:56" (1/1) ... [2023-12-02 13:04:56,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:56" (1/1) ... [2023-12-02 13:04:56,098 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:56" (1/1) ... [2023-12-02 13:04:56,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:56" (1/1) ... [2023-12-02 13:04:56,119 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:56" (1/1) ... [2023-12-02 13:04:56,122 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:56" (1/1) ... [2023-12-02 13:04:56,125 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:56" (1/1) ... [2023-12-02 13:04:56,130 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:04:56,131 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:04:56,131 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:04:56,132 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:04:56,133 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:56" (1/1) ... [2023-12-02 13:04:56,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:04:56,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:04:56,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:04:56,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:04:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:04:56,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:04:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:04:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:04:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 13:04:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:04:56,218 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 13:04:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 13:04:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 13:04:56,219 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 13:04:56,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:04:56,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:04:56,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:04:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:04:56,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 13:04:56,235 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 13:04:56,378 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:04:56,380 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:04:57,219 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:04:57,460 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:04:57,460 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-12-02 13:04:57,461 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:04:57 BoogieIcfgContainer [2023-12-02 13:04:57,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:04:57,463 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:04:57,463 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:04:57,466 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:04:57,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:04:55" (1/3) ... [2023-12-02 13:04:57,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7535246f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:04:57, skipping insertion in model container [2023-12-02 13:04:57,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:04:56" (2/3) ... [2023-12-02 13:04:57,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7535246f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:04:57, skipping insertion in model container [2023-12-02 13:04:57,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:04:57" (3/3) ... [2023-12-02 13:04:57,468 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-12-02 13:04:57,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:04:57,484 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-12-02 13:04:57,484 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 13:04:57,537 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-02 13:04:57,562 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 79 places, 79 transitions, 172 flow [2023-12-02 13:04:57,633 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 730 states, 584 states have (on average 3.333904109589041) internal successors, (1947), 729 states have internal predecessors, (1947), 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 13:04:57,650 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:04:57,655 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;@23291e00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:04:57,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-12-02 13:04:57,660 INFO L276 IsEmpty]: Start isEmpty. Operand has 730 states, 584 states have (on average 3.333904109589041) internal successors, (1947), 729 states have internal predecessors, (1947), 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 13:04:57,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 13:04:57,666 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:57,666 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 13:04:57,667 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:04:57,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:57,671 INFO L85 PathProgramCache]: Analyzing trace with hash 730334, now seen corresponding path program 1 times [2023-12-02 13:04:57,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:04:57,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737573745] [2023-12-02 13:04:57,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:57,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:04:57,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:04:57,707 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:04:57,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 13:04:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:57,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:04:57,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:57,911 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 13:04:57,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:04:57,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 13:04:57,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:04:57,941 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 1 [2023-12-02 13:04:57,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:04:57,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 13:04:57,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:04:57,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 13:04:57,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:04:57,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 13:04:57,994 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 13:04:57,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:04:57,994 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:04:57,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737573745] [2023-12-02 13:04:57,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737573745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:04:57,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:04:57,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:04:57,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206868951] [2023-12-02 13:04:57,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:04:58,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:04:58,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:04:58,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:04:58,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:04:58,026 INFO L87 Difference]: Start difference. First operand has 730 states, 584 states have (on average 3.333904109589041) internal successors, (1947), 729 states have internal predecessors, (1947), 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:04:58,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:58,430 INFO L93 Difference]: Finished difference Result 725 states and 1942 transitions. [2023-12-02 13:04:58,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:04:58,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 13:04:58,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:58,455 INFO L225 Difference]: With dead ends: 725 [2023-12-02 13:04:58,455 INFO L226 Difference]: Without dead ends: 725 [2023-12-02 13:04:58,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:04:58,460 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 8 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:58,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 56 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:04:58,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2023-12-02 13:04:58,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 725. [2023-12-02 13:04:58,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 583 states have (on average 3.3310463121783878) internal successors, (1942), 724 states have internal predecessors, (1942), 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 13:04:58,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1942 transitions. [2023-12-02 13:04:58,557 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1942 transitions. Word has length 3 [2023-12-02 13:04:58,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:58,557 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1942 transitions. [2023-12-02 13:04:58,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:04:58,558 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1942 transitions. [2023-12-02 13:04:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 13:04:58,558 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:58,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 13:04:58,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:04:58,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:04:58,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:04:58,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:04:58,761 INFO L85 PathProgramCache]: Analyzing trace with hash 730335, now seen corresponding path program 1 times [2023-12-02 13:04:58,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:04:58,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870585121] [2023-12-02 13:04:58,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:04:58,762 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 13:04:58,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:04:58,763 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:04:58,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 13:04:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:04:58,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:04:58,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:04:58,905 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 13 treesize of output 7 [2023-12-02 13:04:58,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:04:58,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 13:04:58,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:04:58,943 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 8 treesize of output 1 [2023-12-02 13:04:58,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:04:58,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:04:58,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:04:58,966 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 8 treesize of output 1 [2023-12-02 13:04:58,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:04:58,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:04:59,064 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 13:04:59,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:04:59,064 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:04:59,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870585121] [2023-12-02 13:04:59,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870585121] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:04:59,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:04:59,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:04:59,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983926371] [2023-12-02 13:04:59,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:04:59,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:04:59,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:04:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:04:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:04:59,067 INFO L87 Difference]: Start difference. First operand 725 states and 1942 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:04:59,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:04:59,930 INFO L93 Difference]: Finished difference Result 731 states and 1951 transitions. [2023-12-02 13:04:59,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:04:59,931 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 13:04:59,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:04:59,937 INFO L225 Difference]: With dead ends: 731 [2023-12-02 13:04:59,937 INFO L226 Difference]: Without dead ends: 731 [2023-12-02 13:04:59,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 13:04:59,939 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:04:59,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 76 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 13:04:59,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-12-02 13:04:59,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 731. [2023-12-02 13:04:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 589 states have (on average 3.3123938879456705) internal successors, (1951), 730 states have internal predecessors, (1951), 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 13:04:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1951 transitions. [2023-12-02 13:04:59,978 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1951 transitions. Word has length 3 [2023-12-02 13:04:59,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:04:59,978 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 1951 transitions. [2023-12-02 13:04:59,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:04:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1951 transitions. [2023-12-02 13:04:59,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 13:04:59,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:04:59,979 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 13:04:59,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 13:05:00,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:00,180 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:05:00,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:00,181 INFO L85 PathProgramCache]: Analyzing trace with hash 701861050, now seen corresponding path program 1 times [2023-12-02 13:05:00,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:05:00,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107549519] [2023-12-02 13:05:00,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:00,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:00,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:05:00,183 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:05:00,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:05:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:00,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:05:00,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:00,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:00,406 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-12-02 13:05:00,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2023-12-02 13:05:00,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:00,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:00,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:00,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-12-02 13:05:00,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:00,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-12-02 13:05:00,550 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 13:05:00,551 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-12-02 13:05:00,596 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 13:05:00,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:05:00,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:05:00,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107549519] [2023-12-02 13:05:00,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107549519] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:00,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:00,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:05:00,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632220274] [2023-12-02 13:05:00,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:00,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:05:00,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:05:00,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:05:00,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:05:00,600 INFO L87 Difference]: Start difference. First operand 731 states and 1951 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 13:05:00,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:00,985 INFO L93 Difference]: Finished difference Result 613 states and 1590 transitions. [2023-12-02 13:05:00,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:05:00,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-12-02 13:05:00,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:00,992 INFO L225 Difference]: With dead ends: 613 [2023-12-02 13:05:00,992 INFO L226 Difference]: Without dead ends: 613 [2023-12-02 13:05:00,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 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 13:05:00,993 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:00,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 18 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:05:00,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-12-02 13:05:01,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2023-12-02 13:05:01,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 507 states have (on average 3.136094674556213) internal successors, (1590), 612 states have internal predecessors, (1590), 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 13:05:01,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1590 transitions. [2023-12-02 13:05:01,031 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1590 transitions. Word has length 5 [2023-12-02 13:05:01,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:01,031 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 1590 transitions. [2023-12-02 13:05:01,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 13:05:01,031 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1590 transitions. [2023-12-02 13:05:01,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 13:05:01,032 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:01,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-12-02 13:05:01,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:05:01,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:01,233 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:05:01,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:01,233 INFO L85 PathProgramCache]: Analyzing trace with hash 701861051, now seen corresponding path program 1 times [2023-12-02 13:05:01,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:05:01,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012950741] [2023-12-02 13:05:01,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:01,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:01,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:05:01,235 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:05:01,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:05:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:01,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 13:05:01,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:01,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:01,425 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 11 treesize of output 5 [2023-12-02 13:05:01,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:01,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2023-12-02 13:05:01,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:01,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:01,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:01,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 13:05:01,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:01,529 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 13:05:01,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:01,569 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 13:05:01,631 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 13:05:01,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:05:01,632 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:05:01,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012950741] [2023-12-02 13:05:01,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2012950741] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:01,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:01,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:05:01,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866053652] [2023-12-02 13:05:01,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:01,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:05:01,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:05:01,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:05:01,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:05:01,635 INFO L87 Difference]: Start difference. First operand 613 states and 1590 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 13:05:02,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:02,151 INFO L93 Difference]: Finished difference Result 495 states and 1229 transitions. [2023-12-02 13:05:02,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:05:02,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-12-02 13:05:02,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:02,157 INFO L225 Difference]: With dead ends: 495 [2023-12-02 13:05:02,157 INFO L226 Difference]: Without dead ends: 495 [2023-12-02 13:05:02,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 13:05:02,159 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 125 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:02,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 15 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:05:02,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-12-02 13:05:02,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 495. [2023-12-02 13:05:02,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 425 states have (on average 2.891764705882353) internal successors, (1229), 494 states have internal predecessors, (1229), 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 13:05:02,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 1229 transitions. [2023-12-02 13:05:02,177 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 1229 transitions. Word has length 5 [2023-12-02 13:05:02,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:02,177 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 1229 transitions. [2023-12-02 13:05:02,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 13:05:02,178 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 1229 transitions. [2023-12-02 13:05:02,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-12-02 13:05:02,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:02,178 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1] [2023-12-02 13:05:02,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:05:02,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:02,379 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:05:02,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:02,379 INFO L85 PathProgramCache]: Analyzing trace with hash 701875935, now seen corresponding path program 1 times [2023-12-02 13:05:02,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:05:02,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041757334] [2023-12-02 13:05:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:02,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:02,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:05:02,381 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:05:02,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-12-02 13:05:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:02,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:05:02,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:02,516 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 8 treesize of output 7 [2023-12-02 13:05:02,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:02,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:02,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:02,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:02,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:02,551 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 8 treesize of output 1 [2023-12-02 13:05:02,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:02,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 13:05:02,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:02,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:02,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:03,135 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:05:03,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041757334] [2023-12-02 13:05:03,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041757334] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:03,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1720451052] [2023-12-02 13:05:03,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:03,135 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:05:03,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:05:03,138 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:05:03,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2023-12-02 13:05:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:03,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:05:03,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:03,365 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 8 treesize of output 7 [2023-12-02 13:05:03,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:03,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:03,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:03,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:03,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:03,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-12-02 13:05:03,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:03,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 13:05:03,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:03,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:03,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:03,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1720451052] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:03,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692849870] [2023-12-02 13:05:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:03,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:03,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:03,673 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:03,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 13:05:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:03,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:05:03,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:03,820 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 8 treesize of output 7 [2023-12-02 13:05:03,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:03,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:03,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:03,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:03,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:03,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 13:05:03,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:03,879 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 8 treesize of output 1 [2023-12-02 13:05:03,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:03,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:03,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:04,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692849870] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:04,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:05:04,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 3, 3] total 9 [2023-12-02 13:05:04,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586647316] [2023-12-02 13:05:04,095 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:05:04,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 13:05:04,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:05:04,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 13:05:04,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:05:04,097 INFO L87 Difference]: Start difference. First operand 495 states and 1229 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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 13:05:06,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:08,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:09,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:09,243 INFO L93 Difference]: Finished difference Result 513 states and 1256 transitions. [2023-12-02 13:05:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 13:05:09,244 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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 5 [2023-12-02 13:05:09,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:09,248 INFO L225 Difference]: With dead ends: 513 [2023-12-02 13:05:09,248 INFO L226 Difference]: Without dead ends: 513 [2023-12-02 13:05:09,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-12-02 13:05:09,250 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 11 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:09,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 98 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-12-02 13:05:09,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-12-02 13:05:09,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2023-12-02 13:05:09,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 443 states have (on average 2.835214446952596) internal successors, (1256), 512 states have internal predecessors, (1256), 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 13:05:09,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 1256 transitions. [2023-12-02 13:05:09,267 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 1256 transitions. Word has length 5 [2023-12-02 13:05:09,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:09,268 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 1256 transitions. [2023-12-02 13:05:09,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 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 13:05:09,268 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 1256 transitions. [2023-12-02 13:05:09,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 13:05:09,269 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:09,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 13:05:09,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-12-02 13:05:09,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2023-12-02 13:05:09,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 13:05:09,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:09,873 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:05:09,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:09,874 INFO L85 PathProgramCache]: Analyzing trace with hash 282858060, now seen corresponding path program 1 times [2023-12-02 13:05:09,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:05:09,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339404702] [2023-12-02 13:05:09,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:09,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:09,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:05:09,875 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:05:09,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 13:05:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:10,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:05:10,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:10,014 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 13:05:10,036 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 13:05:10,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-12-02 13:05:10,048 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 13:05:10,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:05:10,048 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:05:10,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339404702] [2023-12-02 13:05:10,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339404702] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:10,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:10,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:05:10,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5245832] [2023-12-02 13:05:10,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:10,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:05:10,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:05:10,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:05:10,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:05:10,050 INFO L87 Difference]: Start difference. First operand 513 states and 1256 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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 13:05:10,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:10,407 INFO L93 Difference]: Finished difference Result 479 states and 1172 transitions. [2023-12-02 13:05:10,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:05:10,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 13:05:10,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:10,412 INFO L225 Difference]: With dead ends: 479 [2023-12-02 13:05:10,412 INFO L226 Difference]: Without dead ends: 479 [2023-12-02 13:05:10,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 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 13:05:10,413 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 53 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:10,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 17 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:05:10,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2023-12-02 13:05:10,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2023-12-02 13:05:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 418 states have (on average 2.8038277511961724) internal successors, (1172), 478 states have internal predecessors, (1172), 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 13:05:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 1172 transitions. [2023-12-02 13:05:10,425 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 1172 transitions. Word has length 6 [2023-12-02 13:05:10,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:10,425 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 1172 transitions. [2023-12-02 13:05:10,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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 13:05:10,426 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 1172 transitions. [2023-12-02 13:05:10,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 13:05:10,426 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:10,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 13:05:10,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:05:10,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:10,627 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:05:10,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:10,627 INFO L85 PathProgramCache]: Analyzing trace with hash 282858061, now seen corresponding path program 1 times [2023-12-02 13:05:10,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:05:10,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137095042] [2023-12-02 13:05:10,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:10,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:10,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:05:10,629 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:05:10,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:05:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:10,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 13:05:10,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:10,792 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 13:05:10,804 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 8 treesize of output 7 [2023-12-02 13:05:10,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:10,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:05:10,857 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:05:10,857 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 13:05:10,915 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 13:05:10,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:05:10,915 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:05:10,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137095042] [2023-12-02 13:05:10,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137095042] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:10,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:10,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:05:10,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759381031] [2023-12-02 13:05:10,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:10,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:05:10,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:05:10,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:05:10,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:05:10,917 INFO L87 Difference]: Start difference. First operand 479 states and 1172 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 13:05:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:11,819 INFO L93 Difference]: Finished difference Result 492 states and 1191 transitions. [2023-12-02 13:05:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:05:11,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 13:05:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:11,823 INFO L225 Difference]: With dead ends: 492 [2023-12-02 13:05:11,823 INFO L226 Difference]: Without dead ends: 492 [2023-12-02 13:05:11,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:05:11,824 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 70 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:11,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 50 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 13:05:11,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-12-02 13:05:11,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 491. [2023-12-02 13:05:11,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 430 states have (on average 2.769767441860465) internal successors, (1191), 490 states have internal predecessors, (1191), 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 13:05:11,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 1191 transitions. [2023-12-02 13:05:11,837 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 1191 transitions. Word has length 6 [2023-12-02 13:05:11,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:11,837 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 1191 transitions. [2023-12-02 13:05:11,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 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 13:05:11,838 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 1191 transitions. [2023-12-02 13:05:11,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 13:05:11,838 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:11,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:05:11,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-02 13:05:12,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:12,039 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:05:12,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:12,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1242489619, now seen corresponding path program 1 times [2023-12-02 13:05:12,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:05:12,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140417515] [2023-12-02 13:05:12,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:12,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:12,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:05:12,042 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:05:12,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:05:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:12,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 13:05:12,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:12,295 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-12-02 13:05:12,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-12-02 13:05:12,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:12,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:12,337 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-12-02 13:05:12,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-12-02 13:05:12,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:12,351 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-12-02 13:05:12,352 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 1 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 13:05:12,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:12,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2023-12-02 13:05:12,435 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 13:05:12,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-12-02 13:05:12,544 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 13:05:12,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:05:12,544 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:05:12,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140417515] [2023-12-02 13:05:12,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140417515] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:12,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:12,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:05:12,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127725184] [2023-12-02 13:05:12,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:12,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:05:12,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:05:12,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:05:12,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:05:12,546 INFO L87 Difference]: Start difference. First operand 491 states and 1191 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:05:12,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:12,958 INFO L93 Difference]: Finished difference Result 470 states and 1148 transitions. [2023-12-02 13:05:12,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:05:12,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 13:05:12,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:12,963 INFO L225 Difference]: With dead ends: 470 [2023-12-02 13:05:12,963 INFO L226 Difference]: Without dead ends: 470 [2023-12-02 13:05:12,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 13:05:12,964 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 112 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:12,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 16 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:05:12,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2023-12-02 13:05:12,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2023-12-02 13:05:12,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 420 states have (on average 2.7333333333333334) internal successors, (1148), 469 states have internal predecessors, (1148), 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 13:05:12,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1148 transitions. [2023-12-02 13:05:12,980 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1148 transitions. Word has length 8 [2023-12-02 13:05:12,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:12,980 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 1148 transitions. [2023-12-02 13:05:12,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:05:12,980 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1148 transitions. [2023-12-02 13:05:12,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-12-02 13:05:12,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:12,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:05:12,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:05:13,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:13,187 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:05:13,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:13,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1242489620, now seen corresponding path program 1 times [2023-12-02 13:05:13,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:05:13,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852943425] [2023-12-02 13:05:13,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:13,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:13,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:05:13,189 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:05:13,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:05:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:13,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 13:05:13,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:13,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:13,435 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 11 treesize of output 5 [2023-12-02 13:05:13,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:13,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:13,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 13:05:13,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:13,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:13,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 13:05:13,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:13,507 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 13:05:13,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:13,551 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 13:05:13,649 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 13:05:13,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:05:13,649 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:05:13,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852943425] [2023-12-02 13:05:13,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852943425] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:13,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:13,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:05:13,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318005370] [2023-12-02 13:05:13,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:13,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:05:13,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:05:13,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:05:13,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:05:13,651 INFO L87 Difference]: Start difference. First operand 470 states and 1148 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:05:14,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:14,075 INFO L93 Difference]: Finished difference Result 449 states and 1105 transitions. [2023-12-02 13:05:14,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:05:14,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-12-02 13:05:14,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:14,079 INFO L225 Difference]: With dead ends: 449 [2023-12-02 13:05:14,079 INFO L226 Difference]: Without dead ends: 449 [2023-12-02 13:05:14,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:05:14,080 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:14,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 10 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:05:14,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-12-02 13:05:14,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2023-12-02 13:05:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 410 states have (on average 2.6951219512195124) internal successors, (1105), 448 states have internal predecessors, (1105), 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 13:05:14,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1105 transitions. [2023-12-02 13:05:14,090 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1105 transitions. Word has length 8 [2023-12-02 13:05:14,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:14,090 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 1105 transitions. [2023-12-02 13:05:14,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:05:14,091 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1105 transitions. [2023-12-02 13:05:14,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 13:05:14,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:14,091 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:05:14,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:05:14,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:14,292 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:05:14,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:14,292 INFO L85 PathProgramCache]: Analyzing trace with hash -137496828, now seen corresponding path program 1 times [2023-12-02 13:05:14,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:05:14,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361073884] [2023-12-02 13:05:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:14,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:14,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:05:14,294 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:05:14,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:05:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:14,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:05:14,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:14,489 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 13:05:14,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:05:14,489 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:05:14,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361073884] [2023-12-02 13:05:14,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361073884] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:05:14,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:05:14,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:05:14,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102621544] [2023-12-02 13:05:14,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:05:14,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:05:14,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:05:14,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:05:14,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:05:14,490 INFO L87 Difference]: Start difference. First operand 449 states and 1105 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 13:05:14,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:15,000 INFO L93 Difference]: Finished difference Result 642 states and 1509 transitions. [2023-12-02 13:05:15,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:05:15,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2023-12-02 13:05:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:15,005 INFO L225 Difference]: With dead ends: 642 [2023-12-02 13:05:15,005 INFO L226 Difference]: Without dead ends: 642 [2023-12-02 13:05:15,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:05:15,005 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 60 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:15,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 131 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:05:15,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-12-02 13:05:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 554. [2023-12-02 13:05:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 515 states have (on average 2.6349514563106795) internal successors, (1357), 553 states have internal predecessors, (1357), 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 13:05:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1357 transitions. [2023-12-02 13:05:15,022 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1357 transitions. Word has length 9 [2023-12-02 13:05:15,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:15,022 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 1357 transitions. [2023-12-02 13:05:15,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 13:05:15,022 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1357 transitions. [2023-12-02 13:05:15,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 13:05:15,023 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:15,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-12-02 13:05:15,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 13:05:15,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:15,224 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:05:15,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:15,224 INFO L85 PathProgramCache]: Analyzing trace with hash -100578289, now seen corresponding path program 1 times [2023-12-02 13:05:15,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:05:15,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450954002] [2023-12-02 13:05:15,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:15,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:15,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:05:15,226 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:05:15,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:05:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:15,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 13:05:15,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:15,455 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 8 treesize of output 7 [2023-12-02 13:05:15,465 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 13:05:15,544 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 13:05:15,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-12-02 13:05:15,581 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:05:15,581 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 13:05:15,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:15,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:05:15,785 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:05:15,785 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 13:05:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:15,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:16,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:05:16,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 74 [2023-12-02 13:05:18,707 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:05:18,708 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:05:18,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:18,712 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:05:18,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450954002] [2023-12-02 13:05:18,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450954002] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:18,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2123794707] [2023-12-02 13:05:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:18,713 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:05:18,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:05:18,714 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:05:18,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2023-12-02 13:05:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:19,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:05:19,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:19,071 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 13:05:19,081 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 8 treesize of output 7 [2023-12-02 13:05:19,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:19,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:05:19,130 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:05:19,130 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 13:05:19,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:19,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:05:19,210 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:05:19,210 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 13:05:19,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:19,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:19,404 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:05:19,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 74 [2023-12-02 13:05:22,019 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:22,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2123794707] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:22,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456893216] [2023-12-02 13:05:22,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:05:22,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:22,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:22,021 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:22,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 13:05:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:05:22,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 13:05:22,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:22,171 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 8 treesize of output 7 [2023-12-02 13:05:22,180 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 13:05:22,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:22,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:05:22,228 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:05:22,228 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 13:05:22,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:22,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:05:22,410 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:05:22,411 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 13:05:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:22,436 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:22,634 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:05:22,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 74 [2023-12-02 13:05:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:25,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456893216] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:25,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:05:25,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5, 5] total 14 [2023-12-02 13:05:25,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151520296] [2023-12-02 13:05:25,516 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:05:25,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 13:05:25,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:05:25,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 13:05:25,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=151, Unknown=2, NotChecked=0, Total=210 [2023-12-02 13:05:25,517 INFO L87 Difference]: Start difference. First operand 554 states and 1357 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 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 13:05:29,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:05:29,811 INFO L93 Difference]: Finished difference Result 630 states and 1471 transitions. [2023-12-02 13:05:29,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 13:05:29,812 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 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 9 [2023-12-02 13:05:29,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:05:29,816 INFO L225 Difference]: With dead ends: 630 [2023-12-02 13:05:29,816 INFO L226 Difference]: Without dead ends: 630 [2023-12-02 13:05:29,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=139, Invalid=321, Unknown=2, NotChecked=0, Total=462 [2023-12-02 13:05:29,817 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 130 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:05:29,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 76 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-12-02 13:05:29,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2023-12-02 13:05:29,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 626. [2023-12-02 13:05:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 587 states have (on average 2.5059625212947187) internal successors, (1471), 625 states have internal predecessors, (1471), 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 13:05:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1471 transitions. [2023-12-02 13:05:29,829 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1471 transitions. Word has length 9 [2023-12-02 13:05:29,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:05:29,830 INFO L495 AbstractCegarLoop]: Abstraction has 626 states and 1471 transitions. [2023-12-02 13:05:29,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 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 13:05:29,830 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1471 transitions. [2023-12-02 13:05:29,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 13:05:29,831 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:05:29,831 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1] [2023-12-02 13:05:29,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:05:30,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2023-12-02 13:05:30,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 13:05:30,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:30,432 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:05:30,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:05:30,432 INFO L85 PathProgramCache]: Analyzing trace with hash 116567263, now seen corresponding path program 2 times [2023-12-02 13:05:30,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:05:30,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994904639] [2023-12-02 13:05:30,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:05:30,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:05:30,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:05:30,434 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:05:30,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:05:30,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:05:30,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:05:30,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 13:05:30,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:30,644 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 13 treesize of output 7 [2023-12-02 13:05:30,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:30,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 13:05:30,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:30,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:30,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:30,677 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 8 treesize of output 1 [2023-12-02 13:05:30,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:30,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:30,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:30,694 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 8 treesize of output 1 [2023-12-02 13:05:30,936 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:30,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:31,869 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:31,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:05:31,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994904639] [2023-12-02 13:05:31,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994904639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:31,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [182384708] [2023-12-02 13:05:31,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:05:31,870 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:05:31,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:05:31,871 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:05:31,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-12-02 13:05:32,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:05:32,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:05:32,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 13:05:32,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:32,267 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 8 treesize of output 7 [2023-12-02 13:05:32,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:32,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:32,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:32,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:32,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:32,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 13:05:32,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:32,318 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 8 treesize of output 1 [2023-12-02 13:05:32,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:32,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:32,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:32,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [182384708] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:32,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788874445] [2023-12-02 13:05:32,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:05:32,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:05:32,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:05:32,787 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:05:32,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 13:05:32,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:05:32,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:05:32,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 13:05:32,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:05:33,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-12-02 13:05:33,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:33,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:33,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:33,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:33,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:33,038 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 8 treesize of output 1 [2023-12-02 13:05:33,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:33,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:05:33,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:05:33,057 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 8 treesize of output 1 [2023-12-02 13:05:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:33,203 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:05:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:05:33,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788874445] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:05:33,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:05:33,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 12 [2023-12-02 13:05:33,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248638232] [2023-12-02 13:05:33,546 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:05:33,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 13:05:33,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:05:33,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 13:05:33,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-12-02 13:05:33,547 INFO L87 Difference]: Start difference. First operand 626 states and 1471 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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 13:05:40,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:42,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:44,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:46,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:47,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:49,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:51,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:53,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:56,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:58,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:05:59,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:06:00,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:00,335 INFO L93 Difference]: Finished difference Result 748 states and 1671 transitions. [2023-12-02 13:06:00,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-02 13:06:00,337 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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 13:06:00,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:00,341 INFO L225 Difference]: With dead ends: 748 [2023-12-02 13:06:00,341 INFO L226 Difference]: Without dead ends: 748 [2023-12-02 13:06:00,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=229, Invalid=473, Unknown=0, NotChecked=0, Total=702 [2023-12-02 13:06:00,342 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 77 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:00,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 100 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 647 Invalid, 5 Unknown, 0 Unchecked, 24.6s Time] [2023-12-02 13:06:00,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-12-02 13:06:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2023-12-02 13:06:00,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 707 states have (on average 2.3635077793493635) internal successors, (1671), 745 states have internal predecessors, (1671), 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 13:06:00,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1671 transitions. [2023-12-02 13:06:00,356 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1671 transitions. Word has length 11 [2023-12-02 13:06:00,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:00,357 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1671 transitions. [2023-12-02 13:06:00,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 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 13:06:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1671 transitions. [2023-12-02 13:06:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 13:06:00,358 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:00,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:06:00,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:06:00,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-12-02 13:06:00,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 13:06:00,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:00,959 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:06:00,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:00,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1981615844, now seen corresponding path program 1 times [2023-12-02 13:06:00,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:06:00,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366207372] [2023-12-02 13:06:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:00,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:06:00,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:06:00,961 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:06:00,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-12-02 13:06:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:01,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:06:01,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:01,106 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 8 treesize of output 7 [2023-12-02 13:06:01,268 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 13:06:01,268 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:06:01,268 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:06:01,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366207372] [2023-12-02 13:06:01,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366207372] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:06:01,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:06:01,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:06:01,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504100013] [2023-12-02 13:06:01,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:06:01,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:06:01,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:06:01,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:06:01,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:06:01,269 INFO L87 Difference]: Start difference. First operand 746 states and 1671 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:06:02,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:02,423 INFO L93 Difference]: Finished difference Result 1550 states and 3834 transitions. [2023-12-02 13:06:02,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:06:02,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-02 13:06:02,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:02,432 INFO L225 Difference]: With dead ends: 1550 [2023-12-02 13:06:02,432 INFO L226 Difference]: Without dead ends: 1550 [2023-12-02 13:06:02,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:06:02,433 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 150 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:02,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 56 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 13:06:02,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1550 states. [2023-12-02 13:06:02,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1550 to 999. [2023-12-02 13:06:02,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 960 states have (on average 2.6260416666666666) internal successors, (2521), 998 states have internal predecessors, (2521), 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 13:06:02,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 2521 transitions. [2023-12-02 13:06:02,455 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 2521 transitions. Word has length 13 [2023-12-02 13:06:02,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:02,456 INFO L495 AbstractCegarLoop]: Abstraction has 999 states and 2521 transitions. [2023-12-02 13:06:02,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:06:02,456 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 2521 transitions. [2023-12-02 13:06:02,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 13:06:02,457 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:02,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:06:02,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-12-02 13:06:02,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:06:02,659 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:06:02,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:02,659 INFO L85 PathProgramCache]: Analyzing trace with hash -408783257, now seen corresponding path program 1 times [2023-12-02 13:06:02,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:06:02,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319064561] [2023-12-02 13:06:02,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:02,660 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:06:02,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:06:02,661 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:06:02,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:06:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:02,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 13:06:02,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:03,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:06:03,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:06:03,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:06:03,657 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:06:03,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319064561] [2023-12-02 13:06:03,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319064561] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 13:06:03,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:06:03,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-12-02 13:06:03,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367426391] [2023-12-02 13:06:03,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:06:03,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:06:03,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:06:03,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:06:03,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:06:03,659 INFO L87 Difference]: Start difference. First operand 999 states and 2521 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:06:04,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:04,195 INFO L93 Difference]: Finished difference Result 1097 states and 2456 transitions. [2023-12-02 13:06:04,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:06:04,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-02 13:06:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:04,203 INFO L225 Difference]: With dead ends: 1097 [2023-12-02 13:06:04,203 INFO L226 Difference]: Without dead ends: 1097 [2023-12-02 13:06:04,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-02 13:06:04,204 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 59 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:04,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 113 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:06:04,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2023-12-02 13:06:04,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 830. [2023-12-02 13:06:04,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 791 states have (on average 2.429835651074589) internal successors, (1922), 829 states have internal predecessors, (1922), 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 13:06:04,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1922 transitions. [2023-12-02 13:06:04,229 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1922 transitions. Word has length 13 [2023-12-02 13:06:04,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:04,229 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1922 transitions. [2023-12-02 13:06:04,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:06:04,229 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1922 transitions. [2023-12-02 13:06:04,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-12-02 13:06:04,230 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:04,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:06:04,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 13:06:04,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:06:04,431 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:06:04,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:04,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1300549735, now seen corresponding path program 1 times [2023-12-02 13:06:04,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:06:04,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805970085] [2023-12-02 13:06:04,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:04,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:06:04,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:06:04,432 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:06:04,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-12-02 13:06:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:04,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:06:04,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:04,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:06:04,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:06:04,638 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:06:04,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805970085] [2023-12-02 13:06:04,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805970085] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:06:04,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:06:04,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:06:04,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82516467] [2023-12-02 13:06:04,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:06:04,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:06:04,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:06:04,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:06:04,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:06:04,639 INFO L87 Difference]: Start difference. First operand 830 states and 1922 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 13:06:04,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:04,990 INFO L93 Difference]: Finished difference Result 796 states and 1758 transitions. [2023-12-02 13:06:04,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:06:04,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 14 [2023-12-02 13:06:04,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:04,995 INFO L225 Difference]: With dead ends: 796 [2023-12-02 13:06:04,995 INFO L226 Difference]: Without dead ends: 748 [2023-12-02 13:06:04,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:06:04,995 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 93 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:04,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 103 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:06:04,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-12-02 13:06:05,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2023-12-02 13:06:05,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 707 states have (on average 2.360678925035361) internal successors, (1669), 745 states have internal predecessors, (1669), 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 13:06:05,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1669 transitions. [2023-12-02 13:06:05,010 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1669 transitions. Word has length 14 [2023-12-02 13:06:05,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:05,010 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 1669 transitions. [2023-12-02 13:06:05,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 13:06:05,010 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1669 transitions. [2023-12-02 13:06:05,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 13:06:05,011 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:05,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:06:05,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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)] Forceful destruction successful, exit code 0 [2023-12-02 13:06:05,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:06:05,212 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:06:05,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:05,212 INFO L85 PathProgramCache]: Analyzing trace with hash -990267678, now seen corresponding path program 1 times [2023-12-02 13:06:05,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:06:05,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614882285] [2023-12-02 13:06:05,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:05,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:06:05,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:06:05,214 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:06:05,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-12-02 13:06:05,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:05,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:06:05,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:05,454 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 13:06:05,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:06:05,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21 [2023-12-02 13:06:05,731 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 13:06:05,731 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:06:05,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614882285] [2023-12-02 13:06:05,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [614882285] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:06:05,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1192559995] [2023-12-02 13:06:05,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:05,732 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:06:05,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:06:05,732 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:06:05,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2023-12-02 13:06:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:06,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:06:06,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:06:06,140 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:06:06,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1192559995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:06:06,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 13:06:06,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4] total 11 [2023-12-02 13:06:06,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324755075] [2023-12-02 13:06:06,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:06:06,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:06:06,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:06:06,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:06:06,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:06:06,141 INFO L87 Difference]: Start difference. First operand 746 states and 1669 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:06:06,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:06:06,757 INFO L93 Difference]: Finished difference Result 955 states and 2152 transitions. [2023-12-02 13:06:06,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:06:06,758 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 13:06:06,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:06:06,763 INFO L225 Difference]: With dead ends: 955 [2023-12-02 13:06:06,763 INFO L226 Difference]: Without dead ends: 895 [2023-12-02 13:06:06,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-02 13:06:06,764 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 34 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:06:06,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 123 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:06:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2023-12-02 13:06:06,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 882. [2023-12-02 13:06:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 843 states have (on average 2.3712930011862396) internal successors, (1999), 881 states have internal predecessors, (1999), 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 13:06:06,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1999 transitions. [2023-12-02 13:06:06,788 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1999 transitions. Word has length 16 [2023-12-02 13:06:06,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:06:06,788 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1999 transitions. [2023-12-02 13:06:06,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:06:06,789 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1999 transitions. [2023-12-02 13:06:06,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 13:06:06,789 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:06:06,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:06:06,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2023-12-02 13:06:06,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-12-02 13:06:07,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:06:07,191 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:06:07,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:06:07,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1537314881, now seen corresponding path program 1 times [2023-12-02 13:06:07,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:06:07,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1098154895] [2023-12-02 13:06:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:07,192 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:06:07,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:06:07,193 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:06:07,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-12-02 13:06:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:07,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 13:06:07,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:06:11,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:06:13,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:06:13,129 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:06:13,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1098154895] [2023-12-02 13:06:13,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1098154895] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:06:13,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [303726290] [2023-12-02 13:06:13,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:13,130 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:06:13,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:06:13,131 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:06:13,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-02 13:06:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:13,404 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 13:06:13,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:06:18,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:06:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:06:21,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [303726290] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:06:21,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664303723] [2023-12-02 13:06:21,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:06:21,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:06:21,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:06:21,036 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:06:21,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 13:06:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:06:21,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 13:06:21,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:06:26,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:06:26,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:06:28,572 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:06:28,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664303723] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:06:28,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:06:28,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9, 9, 6, 6] total 45 [2023-12-02 13:06:28,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786039885] [2023-12-02 13:06:28,573 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:06:28,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-12-02 13:06:28,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:06:28,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-12-02 13:06:28,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1750, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 13:06:28,575 INFO L87 Difference]: Start difference. First operand 882 states and 1999 transitions. Second operand has 46 states, 46 states have (on average 1.673913043478261) internal successors, (77), 45 states have internal predecessors, (77), 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 13:08:22,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:08:22,097 INFO L93 Difference]: Finished difference Result 2420 states and 5371 transitions. [2023-12-02 13:08:22,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-12-02 13:08:22,102 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.673913043478261) internal successors, (77), 45 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-12-02 13:08:22,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:08:22,113 INFO L225 Difference]: With dead ends: 2420 [2023-12-02 13:08:22,113 INFO L226 Difference]: Without dead ends: 2407 [2023-12-02 13:08:22,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3428 ImplicationChecksByTransitivity, 105.9s TimeCoverageRelationStatistics Valid=2515, Invalid=10825, Unknown=0, NotChecked=0, Total=13340 [2023-12-02 13:08:22,117 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 1638 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 2371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:08:22,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 941 Invalid, 2371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 25.5s Time] [2023-12-02 13:08:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2407 states. [2023-12-02 13:08:22,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2407 to 1000. [2023-12-02 13:08:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 961 states have (on average 2.254942767950052) internal successors, (2167), 999 states have internal predecessors, (2167), 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 13:08:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 2167 transitions. [2023-12-02 13:08:22,143 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 2167 transitions. Word has length 16 [2023-12-02 13:08:22,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:08:22,143 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 2167 transitions. [2023-12-02 13:08:22,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.673913043478261) internal successors, (77), 45 states have internal predecessors, (77), 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 13:08:22,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 2167 transitions. [2023-12-02 13:08:22,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 13:08:22,144 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:08:22,144 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1] [2023-12-02 13:08:22,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 13:08:22,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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)] Ended with exit code 0 [2023-12-02 13:08:22,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2023-12-02 13:08:22,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:08:22,745 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:08:22,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:08:22,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1106259049, now seen corresponding path program 1 times [2023-12-02 13:08:22,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:08:22,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757866363] [2023-12-02 13:08:22,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:22,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:08:22,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:08:22,747 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:08:22,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 (28)] Waiting until timeout for monitored process [2023-12-02 13:08:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:22,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:08:22,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:22,975 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 8 treesize of output 7 [2023-12-02 13:08:23,440 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:23,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:08:25,233 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:25,233 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:08:25,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757866363] [2023-12-02 13:08:25,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757866363] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:08:25,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1040481159] [2023-12-02 13:08:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:25,234 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:08:25,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:08:25,235 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:08:25,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-02 13:08:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:25,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:08:25,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:25,644 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 8 treesize of output 7 [2023-12-02 13:08:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:26,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:08:27,004 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:27,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1040481159] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:08:27,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430913316] [2023-12-02 13:08:27,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:08:27,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:08:27,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:08:27,005 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:08:27,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 13:08:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:08:27,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 13:08:27,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:08:27,209 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 8 treesize of output 7 [2023-12-02 13:08:27,429 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:27,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:08:28,031 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:08:28,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430913316] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:08:28,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:08:28,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10, 10, 9, 9] total 22 [2023-12-02 13:08:28,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492947561] [2023-12-02 13:08:28,032 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:08:28,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 13:08:28,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:08:28,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 13:08:28,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-12-02 13:08:28,033 INFO L87 Difference]: Start difference. First operand 1000 states and 2167 transitions. Second operand has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 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 13:08:36,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:38,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:40,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:42,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:44,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:45,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:48,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:53,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:55,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:08:58,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:00,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:02,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:03,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:07,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:09:09,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:09,667 INFO L93 Difference]: Finished difference Result 1175 states and 2395 transitions. [2023-12-02 13:09:09,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-02 13:09:09,668 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 13:09:09,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:09,673 INFO L225 Difference]: With dead ends: 1175 [2023-12-02 13:09:09,673 INFO L226 Difference]: Without dead ends: 1175 [2023-12-02 13:09:09,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=497, Invalid=1143, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 13:09:09,674 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 44 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 85 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:09,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 150 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1207 Invalid, 11 Unknown, 0 Unchecked, 34.0s Time] [2023-12-02 13:09:09,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-12-02 13:09:09,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1174. [2023-12-02 13:09:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 1135 states have (on average 2.1101321585903086) internal successors, (2395), 1173 states have internal predecessors, (2395), 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 13:09:09,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 2395 transitions. [2023-12-02 13:09:09,700 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 2395 transitions. Word has length 18 [2023-12-02 13:09:09,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:09,700 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 2395 transitions. [2023-12-02 13:09:09,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.9545454545454546) internal successors, (43), 23 states have internal predecessors, (43), 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 13:09:09,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 2395 transitions. [2023-12-02 13:09:09,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 13:09:09,701 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:09,701 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1] [2023-12-02 13:09:09,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 (28)] Ended with exit code 0 [2023-12-02 13:09:09,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 13:09:10,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2023-12-02 13:09:10,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:09:10,302 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:09:10,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:10,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2053088205, now seen corresponding path program 2 times [2023-12-02 13:09:10,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:09:10,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816534718] [2023-12-02 13:09:10,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:09:10,303 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:09:10,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:09:10,304 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:09:10,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 (31)] Waiting until timeout for monitored process [2023-12-02 13:09:10,656 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:09:10,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:09:10,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 13:09:10,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:09:10,684 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 8 treesize of output 7 [2023-12-02 13:09:10,694 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 13:09:10,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:09:10,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:09:10,752 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:09:10,753 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 13:09:10,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:09:10,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:09:10,857 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:09:10,858 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 13:09:10,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:09:10,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:09:10,986 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:09:10,986 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 13:09:11,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:09:11,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:09:11,110 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:09:11,111 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 13:09:11,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:09:11,234 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 21 treesize of output 14 [2023-12-02 13:09:11,260 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:09:11,260 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 13:09:11,313 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:09:11,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:09:11,651 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:09:11,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 74 [2023-12-02 13:09:14,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:09:14,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 108 [2023-12-02 13:09:18,600 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:09:18,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 148 treesize of output 200 [2023-12-02 13:09:25,794 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:09:25,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 172 treesize of output 224 [2023-12-02 13:09:35,849 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,850 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,850 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,851 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,851 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,860 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,860 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,861 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,861 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,862 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,868 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,868 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,869 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,869 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,870 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:09:35,872 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:09:35,873 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:09:35,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816534718] [2023-12-02 13:09:35,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816534718] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:09:35,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1106979844] [2023-12-02 13:09:35,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:09:35,873 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:09:35,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:09:35,874 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:09:35,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-12-02 13:09:36,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:09:36,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:09:36,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 13:09:36,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:09:36,738 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 13:09:36,748 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 8 treesize of output 7 [2023-12-02 13:09:36,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:09:36,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:09:36,790 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:09:36,790 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 13:09:36,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:09:36,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:09:36,864 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:09:36,865 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 13:09:36,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:09:36,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:09:36,929 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:09:36,929 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 13:09:36,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:09:36,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:09:36,992 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:09:36,992 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 13:09:37,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:09:37,049 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 21 treesize of output 14 [2023-12-02 13:09:37,071 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:09:37,072 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 13:09:37,093 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:09:37,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:09:37,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:09:37,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 74 [2023-12-02 13:09:40,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:09:40,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 108 [2023-12-02 13:09:48,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:09:48,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 148 treesize of output 200 [2023-12-02 13:10:01,526 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:10:01,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 172 treesize of output 224 [2023-12-02 13:10:16,818 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,819 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,819 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,820 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,820 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,827 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,828 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,828 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,829 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,829 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,836 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,837 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,837 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,838 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,838 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:10:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:10:16,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1106979844] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:10:16,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334792691] [2023-12-02 13:10:16,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:10:16,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:10:16,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:10:16,843 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:10:16,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 13:10:17,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:10:17,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:10:17,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 13:10:17,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:10:17,137 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 13:10:17,144 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 8 treesize of output 7 [2023-12-02 13:10:17,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:10:17,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:10:17,217 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-12-02 13:10:17,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-12-02 13:10:17,329 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-12-02 13:10:17,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-12-02 13:10:17,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:10:17,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:10:17,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:10:17,446 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 13:10:17,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 13:10:17,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:10:17,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:10:17,724 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-12-02 13:10:17,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-12-02 13:10:17,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:10:17,803 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 21 treesize of output 14 [2023-12-02 13:10:17,826 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:10:17,827 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 13:10:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:10:17,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:10:18,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:10:18,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 74 [2023-12-02 13:11:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:11:38,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334792691] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:11:38,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:11:38,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 9, 11] total 33 [2023-12-02 13:11:38,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43174220] [2023-12-02 13:11:38,279 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:11:38,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-02 13:11:38,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:11:38,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-02 13:11:38,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=839, Unknown=43, NotChecked=0, Total=1122 [2023-12-02 13:11:38,281 INFO L87 Difference]: Start difference. First operand 1174 states and 2395 transitions. Second operand has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 34 states have internal predecessors, (63), 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 13:11:47,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:11:49,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:11:57,272 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul (_ bv4 32) |c_ULTIMATE.start_main_~i~2#1|))) (let ((.cse0 (bvadd .cse1 (_ bv4 32) c_~B~0.offset)) (.cse15 (bvadd .cse1 (_ bv20 32) c_~B~0.offset)) (.cse4 (bvadd (_ bv16 32) .cse1 c_~B~0.offset)) (.cse9 (bvadd .cse1 (_ bv8 32) c_~B~0.offset)) (.cse2 (bvadd .cse1 (_ bv12 32) c_~B~0.offset))) (let ((.cse10 (bvule .cse9 .cse2)) (.cse8 (not (bvslt (bvadd (_ bv2 32) |c_ULTIMATE.start_main_~i~2#1|) c_~N~0))) (.cse7 (not (bvslt (bvadd (_ bv3 32) |c_ULTIMATE.start_main_~i~2#1|) c_~N~0))) (.cse6 (bvule .cse2 .cse4)) (.cse17 (bvule .cse4 .cse15)) (.cse20 (not (bvslt (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~i~2#1|) c_~N~0))) (.cse37 (bvule .cse0 .cse9)) (.cse38 (not (bvslt (bvadd |c_ULTIMATE.start_main_~i~2#1| (_ bv1 32)) c_~N~0)))) (and (or (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32))) (or (forall ((v_ArrVal_1297 (_ BitVec 32))) (bvule .cse0 (select (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218|) (_ bv0 1))))) (or (bvule (bvadd .cse1 c_~B~0.offset) .cse0) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218|) (_ bv0 1)))))) (not (bvslt |c_ULTIMATE.start_main_~i~2#1| c_~N~0))) (or (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221|))) (forall ((v_prenex_8 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_prenex_7 (_ BitVec 32)) (v_ArrVal_1294 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (let ((.cse3 (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| v_ArrVal_1294) v_prenex_7 v_prenex_8) v_prenex_5 v_prenex_6))) (or (= v_prenex_7 c_~B~0.base) (= v_prenex_5 c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (not (bvule .cse2 (select .cse3 c_~B~0.base))) (bvule .cse4 (select (store .cse3 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base))))))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221|))) (forall ((v_prenex_10 (_ BitVec 32)) (v_prenex_9 (_ BitVec 32)) (v_ArrVal_1294 (_ BitVec 32)) (v_prenex_12 (_ BitVec 32)) (v_prenex_11 (_ BitVec 32)) (v_prenex_14 (_ BitVec 32)) (v_prenex_13 (_ BitVec 32))) (let ((.cse5 (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| v_ArrVal_1294) v_prenex_9 v_prenex_12) v_prenex_13 v_prenex_10))) (or (= v_prenex_11 c_~B~0.base) (bvule .cse4 (select (store .cse5 v_prenex_11 v_prenex_14) c_~B~0.base)) (= v_prenex_9 c_~B~0.base) (= v_prenex_13 c_~B~0.base) (not (bvule .cse2 (select .cse5 c_~B~0.base)))))))) (or (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| (_ BitVec 32)) (v_ArrVal_1295 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32)) (v_ArrVal_1294 (_ BitVec 32)) (v_ArrVal_1296 (_ BitVec 32))) (or (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| c_~B~0.base) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221|))) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| c_~B~0.base) (not (bvule .cse2 (select (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| v_ArrVal_1294) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| v_ArrVal_1295) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296) c_~B~0.base))))) .cse6)) .cse7) (or .cse8 (and (or (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32)) (v_ArrVal_1296 (_ BitVec 32))) (or (not (bvule .cse9 (select (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296) c_~B~0.base))) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| c_~B~0.base))) .cse10) (forall ((v_prenex_6 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (let ((.cse11 (store |c_#length| v_prenex_5 v_prenex_6))) (or (not (bvule .cse9 (select .cse11 c_~B~0.base))) (= v_prenex_5 c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (bvule .cse2 (select (store .cse11 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base))))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (let ((.cse12 (store |c_#length| v_prenex_5 v_prenex_6))) (or (not (bvule .cse9 (select .cse12 c_~B~0.base))) (= v_prenex_5 c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (bvule .cse2 (select (store .cse12 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base))))))) (bvsge c_~N~0 (_ bv0 32)) (or (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_233| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_233|))) (forall ((v_ArrVal_1395 (_ BitVec 1))) (let ((.cse16 (store |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_233| v_ArrVal_1395))) (or (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232| (_ BitVec 32)) (v_ArrVal_1396 (_ BitVec 32))) (or (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231| (_ BitVec 32)) (v_ArrVal_1398 (_ BitVec 1)) (v_ArrVal_1397 (_ BitVec 32))) (let ((.cse13 (store .cse16 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232| v_ArrVal_1398))) (or (forall ((v_ArrVal_1400 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32))) (or (not (= (select (store .cse13 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231| (_ bv1 1)) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219|) (_ bv0 1))) (forall ((v_ArrVal_1296 (_ BitVec 32))) (let ((.cse14 (store (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_233| v_ArrVal_1396) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232| v_ArrVal_1397) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231| v_ArrVal_1400) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296))) (or (not (bvule .cse4 (select .cse14 c_~B~0.base))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (or (bvule .cse15 (select (store .cse14 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base)) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base)))))))) (not (= (_ bv0 1) (select .cse13 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231|)))))) (not (= (select .cse16 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232|) (_ bv0 1))))) (not (= (_ bv0 1) (bvadd (select .cse16 c_~B~0.base) (_ bv1 1))))))))) (or .cse17 (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232| (_ BitVec 32)) (v_ArrVal_1400 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231| (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_233| (_ BitVec 32)) (v_ArrVal_1398 (_ BitVec 1)) (v_ArrVal_1395 (_ BitVec 1)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32)) (v_ArrVal_1396 (_ BitVec 32)) (v_ArrVal_1296 (_ BitVec 32)) (v_ArrVal_1397 (_ BitVec 32))) (let ((.cse18 (store |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_233| v_ArrVal_1395))) (let ((.cse19 (store .cse18 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232| v_ArrVal_1398))) (or (not (bvule .cse4 (select (store (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_233| v_ArrVal_1396) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232| v_ArrVal_1397) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231| v_ArrVal_1400) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296) c_~B~0.base))) (not (= (_ bv0 1) (bvadd (select .cse18 c_~B~0.base) (_ bv1 1)))) (not (= (select (store .cse19 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231| (_ bv1 1)) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219|) (_ bv0 1))) (not (= (select .cse18 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232|) (_ bv0 1))) (not (= (_ bv0 1) (select .cse19 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_233|))))))))) .cse20) (or .cse8 (and (or (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32)) (v_ArrVal_1296 (_ BitVec 32))) (or (not (bvule .cse9 (select (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296) c_~B~0.base))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219|))))) .cse10) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219|))) (forall ((v_ArrVal_1296 (_ BitVec 32))) (let ((.cse21 (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296))) (or (not (bvule .cse9 (select .cse21 c_~B~0.base))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (or (bvule .cse2 (select (store .cse21 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base)) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base)))))))))) (or .cse7 (and (forall ((v_prenex_10 (_ BitVec 32)) (v_prenex_9 (_ BitVec 32)) (v_prenex_12 (_ BitVec 32)) (v_prenex_11 (_ BitVec 32)) (v_prenex_14 (_ BitVec 32)) (v_prenex_13 (_ BitVec 32))) (let ((.cse22 (store (store |c_#length| v_prenex_9 v_prenex_12) v_prenex_13 v_prenex_10))) (or (= v_prenex_11 c_~B~0.base) (= v_prenex_9 c_~B~0.base) (= v_prenex_13 c_~B~0.base) (bvule .cse4 (select (store .cse22 v_prenex_11 v_prenex_14) c_~B~0.base)) (not (bvule .cse2 (select .cse22 c_~B~0.base)))))) (or .cse6 (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| (_ BitVec 32)) (v_ArrVal_1295 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32)) (v_ArrVal_1296 (_ BitVec 32))) (or (not (bvule .cse2 (select (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| v_ArrVal_1295) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296) c_~B~0.base))) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| c_~B~0.base)))) (forall ((v_prenex_8 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_prenex_7 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (let ((.cse23 (store (store |c_#length| v_prenex_7 v_prenex_8) v_prenex_5 v_prenex_6))) (or (= v_prenex_7 c_~B~0.base) (= v_prenex_5 c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (not (bvule .cse2 (select .cse23 c_~B~0.base))) (bvule .cse4 (select (store .cse23 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base))))))) (or (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_225| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_225|) (_ bv0 1))) (forall ((v_ArrVal_1346 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (let ((.cse24 (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_225| v_ArrVal_1346) v_prenex_5 v_prenex_6))) (or (= v_prenex_5 c_~B~0.base) (bvule .cse2 (select (store .cse24 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base)) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (not (bvule .cse9 (select .cse24 c_~B~0.base)))))))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_225| (_ BitVec 32))) (or (forall ((v_ArrVal_1346 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (let ((.cse25 (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_225| v_ArrVal_1346) v_prenex_5 v_prenex_6))) (or (= v_prenex_5 c_~B~0.base) (bvule .cse2 (select (store .cse25 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base)) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (not (bvule .cse9 (select .cse25 c_~B~0.base)))))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_225|) (_ bv0 1))))) (or (forall ((v_ArrVal_1346 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_225| (_ BitVec 32)) (v_ArrVal_1296 (_ BitVec 32))) (or (not (bvule .cse9 (select (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_225| v_ArrVal_1346) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296) c_~B~0.base))) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| c_~B~0.base) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_225|) (_ bv0 1))))) .cse10)) .cse8) (or .cse20 (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_227| (_ BitVec 32))) (or (forall ((v_ArrVal_1344 (_ BitVec 32)) (v_prenex_10 (_ BitVec 32)) (v_prenex_9 (_ BitVec 32)) (v_prenex_18 (_ BitVec 32)) (v_prenex_17 (_ BitVec 32)) (v_prenex_12 (_ BitVec 32)) (v_prenex_11 (_ BitVec 32)) (v_prenex_14 (_ BitVec 32)) (v_prenex_13 (_ BitVec 32))) (let ((.cse26 (store (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_227| v_ArrVal_1344) v_prenex_17 v_prenex_18) v_prenex_9 v_prenex_12) v_prenex_13 v_prenex_10))) (or (= v_prenex_11 c_~B~0.base) (= v_prenex_9 c_~B~0.base) (= v_prenex_13 c_~B~0.base) (= v_prenex_17 c_~B~0.base) (bvule .cse15 (select (store .cse26 v_prenex_11 v_prenex_14) c_~B~0.base)) (not (bvule .cse4 (select .cse26 c_~B~0.base)))))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_227|) (_ bv0 1))))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_227| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_227|) (_ bv0 1))) (forall ((v_ArrVal_1344 (_ BitVec 32)) (v_prenex_8 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_prenex_16 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (v_prenex_7 (_ BitVec 32)) (v_prenex_15 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (let ((.cse27 (store (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_227| v_ArrVal_1344) v_prenex_15 v_prenex_16) v_prenex_7 v_prenex_8) v_prenex_5 v_prenex_6))) (or (= v_prenex_7 c_~B~0.base) (= v_prenex_5 c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (bvule .cse15 (select (store .cse27 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base)) (not (bvule .cse4 (select .cse27 c_~B~0.base))) (= v_prenex_15 c_~B~0.base)))))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_227| (_ BitVec 32))) (or (forall ((v_ArrVal_1344 (_ BitVec 32)) (v_prenex_8 (_ BitVec 32)) (v_prenex_16 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_prenex_15 (_ BitVec 32)) (v_prenex_7 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (let ((.cse28 (store (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_227| v_ArrVal_1344) v_prenex_15 v_prenex_16) v_prenex_7 v_prenex_8) v_prenex_5 v_prenex_6))) (or (= v_prenex_7 c_~B~0.base) (= v_prenex_5 c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (bvule .cse15 (select (store .cse28 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base)) (not (bvule .cse4 (select .cse28 c_~B~0.base))) (= v_prenex_15 c_~B~0.base)))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_227|) (_ bv0 1))))) (or .cse17 (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| (_ BitVec 32)) (v_ArrVal_1344 (_ BitVec 32)) (v_ArrVal_1295 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32)) (v_ArrVal_1294 (_ BitVec 32)) (v_ArrVal_1296 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_227| (_ BitVec 32))) (or (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| c_~B~0.base) (not (bvule .cse4 (select (store (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_227| v_ArrVal_1344) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| v_ArrVal_1294) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| v_ArrVal_1295) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296) c_~B~0.base))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_227|) (_ bv0 1)))))))) (or .cse7 (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232|) (_ bv0 1))) (forall ((v_ArrVal_1398 (_ BitVec 1))) (let ((.cse29 (store |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232| v_ArrVal_1398))) (or (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231| (_ BitVec 32)) (v_ArrVal_1397 (_ BitVec 32))) (or (not (= (select .cse29 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231|) (_ bv0 1))) (forall ((v_ArrVal_1400 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32))) (or (forall ((v_ArrVal_1296 (_ BitVec 32))) (let ((.cse30 (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232| v_ArrVal_1397) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231| v_ArrVal_1400) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296))) (or (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (or (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (bvule .cse4 (select (store .cse30 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base)))) (not (bvule .cse2 (select .cse30 c_~B~0.base)))))) (not (= (_ bv0 1) (select (store .cse29 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231| (_ bv1 1)) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219|))))))) (not (= (_ bv0 1) (bvadd (select .cse29 c_~B~0.base) (_ bv1 1))))))))) (or .cse6 (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232| (_ BitVec 32)) (v_ArrVal_1400 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231| (_ BitVec 32)) (v_ArrVal_1398 (_ BitVec 1)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32)) (v_ArrVal_1296 (_ BitVec 32)) (v_ArrVal_1397 (_ BitVec 32))) (let ((.cse31 (store |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232| v_ArrVal_1398))) (or (not (= (select .cse31 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231|) (_ bv0 1))) (not (= (_ bv0 1) (bvadd (select .cse31 c_~B~0.base) (_ bv1 1)))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232|) (_ bv0 1))) (not (bvule .cse2 (select (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_232| v_ArrVal_1397) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231| v_ArrVal_1400) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296) c_~B~0.base))) (not (= (_ bv0 1) (select (store .cse31 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_231| (_ bv1 1)) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219|))))))))) (or .cse7 (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_226| (_ BitVec 32))) (or (forall ((v_ArrVal_1345 (_ BitVec 32)) (v_prenex_8 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_prenex_7 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (let ((.cse32 (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_226| v_ArrVal_1345) v_prenex_7 v_prenex_8) v_prenex_5 v_prenex_6))) (or (= v_prenex_7 c_~B~0.base) (= v_prenex_5 c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (not (bvule .cse2 (select .cse32 c_~B~0.base))) (bvule .cse4 (select (store .cse32 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_226|))))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_226| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_226|))) (forall ((v_ArrVal_1345 (_ BitVec 32)) (v_prenex_10 (_ BitVec 32)) (v_prenex_9 (_ BitVec 32)) (v_prenex_12 (_ BitVec 32)) (v_prenex_11 (_ BitVec 32)) (v_prenex_14 (_ BitVec 32)) (v_prenex_13 (_ BitVec 32))) (let ((.cse33 (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_226| v_ArrVal_1345) v_prenex_9 v_prenex_12) v_prenex_13 v_prenex_10))) (or (not (bvule .cse2 (select .cse33 c_~B~0.base))) (= v_prenex_11 c_~B~0.base) (= v_prenex_9 c_~B~0.base) (= v_prenex_13 c_~B~0.base) (bvule .cse4 (select (store .cse33 v_prenex_11 v_prenex_14) c_~B~0.base))))))) (or .cse6 (forall ((v_ArrVal_1345 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| (_ BitVec 32)) (v_ArrVal_1295 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32)) (v_ArrVal_1296 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_226| (_ BitVec 32))) (or (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| c_~B~0.base) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_226|))) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| c_~B~0.base) (not (bvule .cse2 (select (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_226| v_ArrVal_1345) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| v_ArrVal_1295) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296) c_~B~0.base)))))))) (or (and (forall ((v_prenex_8 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_prenex_16 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (v_prenex_7 (_ BitVec 32)) (v_prenex_15 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (let ((.cse34 (store (store (store |c_#length| v_prenex_15 v_prenex_16) v_prenex_7 v_prenex_8) v_prenex_5 v_prenex_6))) (or (= v_prenex_7 c_~B~0.base) (= v_prenex_5 c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (bvule .cse15 (select (store .cse34 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base)) (= v_prenex_15 c_~B~0.base) (not (bvule .cse4 (select .cse34 c_~B~0.base)))))) (forall ((v_prenex_10 (_ BitVec 32)) (v_prenex_9 (_ BitVec 32)) (v_prenex_18 (_ BitVec 32)) (v_prenex_17 (_ BitVec 32)) (v_prenex_12 (_ BitVec 32)) (v_prenex_11 (_ BitVec 32)) (v_prenex_14 (_ BitVec 32)) (v_prenex_13 (_ BitVec 32))) (let ((.cse35 (store (store (store |c_#length| v_prenex_17 v_prenex_18) v_prenex_9 v_prenex_12) v_prenex_13 v_prenex_10))) (or (= v_prenex_11 c_~B~0.base) (= v_prenex_9 c_~B~0.base) (= v_prenex_13 c_~B~0.base) (= v_prenex_17 c_~B~0.base) (bvule .cse15 (select (store .cse35 v_prenex_11 v_prenex_14) c_~B~0.base)) (not (bvule .cse4 (select .cse35 c_~B~0.base)))))) (forall ((v_prenex_8 (_ BitVec 32)) (v_prenex_16 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_prenex_15 (_ BitVec 32)) (v_prenex_7 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (let ((.cse36 (store (store (store |c_#length| v_prenex_15 v_prenex_16) v_prenex_7 v_prenex_8) v_prenex_5 v_prenex_6))) (or (= v_prenex_7 c_~B~0.base) (= v_prenex_5 c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (bvule .cse15 (select (store .cse36 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base)) (= v_prenex_15 c_~B~0.base) (not (bvule .cse4 (select .cse36 c_~B~0.base)))))) (or (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| (_ BitVec 32)) (v_ArrVal_1295 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32)) (v_ArrVal_1294 (_ BitVec 32)) (v_ArrVal_1296 (_ BitVec 32))) (or (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| c_~B~0.base) (not (bvule .cse4 (select (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| v_ArrVal_1294) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| v_ArrVal_1295) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296) c_~B~0.base))) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| c_~B~0.base))) .cse17)) .cse20) (or (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (or (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (bvule .cse9 (select (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base)))) .cse37) (not (bvule .cse0 (select |c_#length| c_~B~0.base))) .cse38) (or (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_222| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_222|))) (forall ((v_prenex_8 (_ BitVec 32)) (v_ArrVal_1293 (_ BitVec 32)) (v_prenex_16 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_prenex_15 (_ BitVec 32)) (v_prenex_7 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (let ((.cse39 (store (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_222| v_ArrVal_1293) v_prenex_15 v_prenex_16) v_prenex_7 v_prenex_8) v_prenex_5 v_prenex_6))) (or (= v_prenex_7 c_~B~0.base) (= v_prenex_5 c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (bvule .cse15 (select (store .cse39 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base)) (= v_prenex_15 c_~B~0.base) (not (bvule .cse4 (select .cse39 c_~B~0.base)))))))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_222| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_222|))) (forall ((v_prenex_10 (_ BitVec 32)) (v_prenex_9 (_ BitVec 32)) (v_ArrVal_1293 (_ BitVec 32)) (v_prenex_18 (_ BitVec 32)) (v_prenex_17 (_ BitVec 32)) (v_prenex_12 (_ BitVec 32)) (v_prenex_11 (_ BitVec 32)) (v_prenex_14 (_ BitVec 32)) (v_prenex_13 (_ BitVec 32))) (let ((.cse40 (store (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_222| v_ArrVal_1293) v_prenex_17 v_prenex_18) v_prenex_9 v_prenex_12) v_prenex_13 v_prenex_10))) (or (= v_prenex_11 c_~B~0.base) (= v_prenex_9 c_~B~0.base) (= v_prenex_13 c_~B~0.base) (= v_prenex_17 c_~B~0.base) (not (bvule .cse4 (select .cse40 c_~B~0.base))) (bvule .cse15 (select (store .cse40 v_prenex_11 v_prenex_14) c_~B~0.base))))))) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_222| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_222|))) (forall ((v_prenex_8 (_ BitVec 32)) (v_ArrVal_1293 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_prenex_16 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (v_prenex_7 (_ BitVec 32)) (v_prenex_15 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (let ((.cse41 (store (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_222| v_ArrVal_1293) v_prenex_15 v_prenex_16) v_prenex_7 v_prenex_8) v_prenex_5 v_prenex_6))) (or (= v_prenex_7 c_~B~0.base) (= v_prenex_5 c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base) (bvule .cse15 (select (store .cse41 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base)) (= v_prenex_15 c_~B~0.base) (not (bvule .cse4 (select .cse41 c_~B~0.base)))))))) (or .cse17 (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_222| (_ BitVec 32)) (v_ArrVal_1293 (_ BitVec 32)) (v_ArrVal_1295 (_ BitVec 32)) (|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32)) (v_ArrVal_1294 (_ BitVec 32)) (v_ArrVal_1296 (_ BitVec 32))) (or (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| c_~B~0.base) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| c_~B~0.base) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_222|))) (not (bvule .cse4 (select (store (store (store (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_222| v_ArrVal_1293) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_221| v_ArrVal_1294) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_220| v_ArrVal_1295) |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296) c_~B~0.base))))))) .cse20) (or (and (or (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32)) (v_ArrVal_1296 (_ BitVec 32))) (or (not (bvule .cse0 (select (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296) c_~B~0.base))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219|))))) .cse37) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| (_ BitVec 32))) (or (forall ((v_ArrVal_1296 (_ BitVec 32))) (let ((.cse42 (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219| v_ArrVal_1296))) (or (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| (_ BitVec 32)) (v_ArrVal_1297 (_ BitVec 32))) (or (bvule .cse9 (select (store .cse42 |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| v_ArrVal_1297) c_~B~0.base)) (= |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_218| c_~B~0.base))) (not (bvule .cse0 (select .cse42 c_~B~0.base)))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_219|)))))) .cse38))))) is different from true [2023-12-02 13:12:23,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:12:25,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:12:27,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:12:29,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:12:31,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:12:47,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:12:49,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:12:51,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:12:53,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:12:55,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:12:57,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:12:59,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:13:18,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:13:20,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:13:22,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:13:36,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:13:38,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:13:40,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:13:54,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:14:08,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:14:10,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:14:12,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:14:13,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:14:19,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:14:24,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:14:24,213 INFO L93 Difference]: Finished difference Result 2523 states and 5052 transitions. [2023-12-02 13:14:24,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-02 13:14:24,214 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 34 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 13:14:24,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:14:24,225 INFO L225 Difference]: With dead ends: 2523 [2023-12-02 13:14:24,225 INFO L226 Difference]: Without dead ends: 2523 [2023-12-02 13:14:24,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 64 SyntacticMatches, 9 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 195.3s TimeCoverageRelationStatistics Valid=539, Invalid=1756, Unknown=61, NotChecked=94, Total=2450 [2023-12-02 13:14:24,227 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 251 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 24 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 91.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:14:24,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 149 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1502 Invalid, 20 Unknown, 58 Unchecked, 91.0s Time] [2023-12-02 13:14:24,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2523 states. [2023-12-02 13:14:24,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2523 to 1960. [2023-12-02 13:14:24,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1960 states, 1921 states have (on average 1.8558042686100988) internal successors, (3565), 1959 states have internal predecessors, (3565), 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 13:14:24,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1960 states to 1960 states and 3565 transitions. [2023-12-02 13:14:24,265 INFO L78 Accepts]: Start accepts. Automaton has 1960 states and 3565 transitions. Word has length 18 [2023-12-02 13:14:24,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:14:24,266 INFO L495 AbstractCegarLoop]: Abstraction has 1960 states and 3565 transitions. [2023-12-02 13:14:24,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 34 states have internal predecessors, (63), 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 13:14:24,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1960 states and 3565 transitions. [2023-12-02 13:14:24,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 13:14:24,267 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:14:24,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:14:24,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 (31)] Ended with exit code 0 [2023-12-02 13:14:24,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2023-12-02 13:14:24,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 13:14:24,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:14:24,868 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:14:24,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:14:24,868 INFO L85 PathProgramCache]: Analyzing trace with hash 65905865, now seen corresponding path program 1 times [2023-12-02 13:14:24,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:14:24,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587002401] [2023-12-02 13:14:24,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:14:24,868 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 13:14:24,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:14:24,869 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:14:24,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 (34)] Waiting until timeout for monitored process [2023-12-02 13:14:25,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:14:25,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 13:14:25,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:14:25,209 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 13:14:25,255 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-12-02 13:14:25,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-12-02 13:14:25,309 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-12-02 13:14:25,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2023-12-02 13:14:25,488 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 13:14:25,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:14:25,489 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:14:25,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587002401] [2023-12-02 13:14:25,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587002401] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:14:25,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:14:25,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:14:25,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052169342] [2023-12-02 13:14:25,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:14:25,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:14:25,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:14:25,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:14:25,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:14:25,490 INFO L87 Difference]: Start difference. First operand 1960 states and 3565 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:14:26,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:14:26,079 INFO L93 Difference]: Finished difference Result 1888 states and 3362 transitions. [2023-12-02 13:14:26,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:14:26,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 13:14:26,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:14:26,088 INFO L225 Difference]: With dead ends: 1888 [2023-12-02 13:14:26,088 INFO L226 Difference]: Without dead ends: 1888 [2023-12-02 13:14:26,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:14:26,089 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 66 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:14:26,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 22 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:14:26,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2023-12-02 13:14:26,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1888. [2023-12-02 13:14:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1859 states have (on average 1.8084991931145777) internal successors, (3362), 1887 states have internal predecessors, (3362), 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 13:14:26,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 3362 transitions. [2023-12-02 13:14:26,117 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 3362 transitions. Word has length 18 [2023-12-02 13:14:26,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:14:26,117 INFO L495 AbstractCegarLoop]: Abstraction has 1888 states and 3362 transitions. [2023-12-02 13:14:26,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:14:26,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 3362 transitions. [2023-12-02 13:14:26,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 13:14:26,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:14:26,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:14:26,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 (34)] Ended with exit code 0 [2023-12-02 13:14:26,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:14:26,318 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:14:26,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:14:26,319 INFO L85 PathProgramCache]: Analyzing trace with hash 65905866, now seen corresponding path program 1 times [2023-12-02 13:14:26,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:14:26,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350638560] [2023-12-02 13:14:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:14:26,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:14:26,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:14:26,320 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:14:26,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 (35)] Waiting until timeout for monitored process [2023-12-02 13:14:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:14:26,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 13:14:26,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:14:26,635 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 13:14:26,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:14:26,716 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 13:14:26,736 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:14:26,737 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 13:14:26,808 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 13:14:26,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-12-02 13:14:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:14:27,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:14:27,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 47 treesize of output 43 [2023-12-02 13:14:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:14:28,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:14:28,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350638560] [2023-12-02 13:14:28,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350638560] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:14:28,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1092682749] [2023-12-02 13:14:28,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:14:28,015 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:14:28,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:14:28,016 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:14:28,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2023-12-02 13:14:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:14:28,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 13:14:28,611 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:14:29,972 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 10 treesize of output 9 [2023-12-02 13:14:30,062 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 13:14:30,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:14:30,796 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 18 treesize of output 13 [2023-12-02 13:14:30,812 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:14:30,813 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 13:14:31,572 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 13:14:31,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2023-12-02 13:14:35,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:14:35,625 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:14:36,881 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 13:14:36,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2023-12-02 13:14:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:14:37,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1092682749] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:14:37,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985293400] [2023-12-02 13:14:37,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:14:37,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:14:37,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:14:37,637 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:14:37,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-12-02 13:14:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:14:37,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 13:14:37,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:14:37,856 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 13:14:37,876 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 8 treesize of output 7 [2023-12-02 13:14:38,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:14:38,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-12-02 13:14:38,703 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:14:38,704 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 13:14:39,087 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 13:14:39,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2023-12-02 13:14:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:14:41,515 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:14:44,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:14:44,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985293400] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:14:44,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:14:44,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 9, 10] total 38 [2023-12-02 13:14:44,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650113546] [2023-12-02 13:14:44,175 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:14:44,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-02 13:14:44,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:14:44,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-02 13:14:44,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 13:14:44,177 INFO L87 Difference]: Start difference. First operand 1888 states and 3362 transitions. Second operand has 39 states, 38 states have (on average 2.210526315789474) internal successors, (84), 39 states have internal predecessors, (84), 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 13:14:54,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-02 13:14:56,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-02 13:15:18,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-02 13:15:52,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-02 13:15:53,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-02 13:16:00,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-02 13:16:02,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-02 13:16:08,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-02 13:16:17,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-12-02 13:16:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:16:18,075 INFO L93 Difference]: Finished difference Result 4170 states and 8860 transitions. [2023-12-02 13:16:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2023-12-02 13:16:18,076 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.210526315789474) internal successors, (84), 39 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-12-02 13:16:18,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:16:18,092 INFO L225 Difference]: With dead ends: 4170 [2023-12-02 13:16:18,092 INFO L226 Difference]: Without dead ends: 4170 [2023-12-02 13:16:18,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2931 ImplicationChecksByTransitivity, 62.2s TimeCoverageRelationStatistics Valid=1550, Invalid=8347, Unknown=3, NotChecked=0, Total=9900 [2023-12-02 13:16:18,095 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 888 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 1627 mSolverCounterSat, 124 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 1754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1627 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:16:18,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 135 Invalid, 1754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1627 Invalid, 3 Unknown, 0 Unchecked, 43.6s Time] [2023-12-02 13:16:18,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2023-12-02 13:16:18,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 1961. [2023-12-02 13:16:18,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1961 states, 1932 states have (on average 1.8597308488612836) internal successors, (3593), 1960 states have internal predecessors, (3593), 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 13:16:18,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1961 states to 1961 states and 3593 transitions. [2023-12-02 13:16:18,138 INFO L78 Accepts]: Start accepts. Automaton has 1961 states and 3593 transitions. Word has length 18 [2023-12-02 13:16:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:16:18,138 INFO L495 AbstractCegarLoop]: Abstraction has 1961 states and 3593 transitions. [2023-12-02 13:16:18,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.210526315789474) internal successors, (84), 39 states have internal predecessors, (84), 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 13:16:18,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1961 states and 3593 transitions. [2023-12-02 13:16:18,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 13:16:18,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:16:18,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:16:18,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 (35)] Ended with exit code 0 [2023-12-02 13:16:18,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-12-02 13:16:18,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2023-12-02 13:16:18,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:16:18,740 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:16:18,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:16:18,740 INFO L85 PathProgramCache]: Analyzing trace with hash 2043082549, now seen corresponding path program 1 times [2023-12-02 13:16:18,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:16:18,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314597530] [2023-12-02 13:16:18,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:16:18,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:16:18,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:16:18,742 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:16:18,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 (38)] Waiting until timeout for monitored process [2023-12-02 13:16:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:16:19,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:16:19,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:16:19,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2023-12-02 13:16:19,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:19,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 13:16:19,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:19,120 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 1 [2023-12-02 13:16:19,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:19,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 13:16:19,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:19,138 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 1 [2023-12-02 13:16:19,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:19,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 13:16:19,205 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-12-02 13:16:19,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-12-02 13:16:19,261 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2023-12-02 13:16:19,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-12-02 13:16:19,324 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-12-02 13:16:19,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2023-12-02 13:16:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 13:16:19,476 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:16:19,476 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:16:19,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314597530] [2023-12-02 13:16:19,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314597530] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:16:19,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:16:19,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:16:19,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328966177] [2023-12-02 13:16:19,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:16:19,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:16:19,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:16:19,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:16:19,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:16:19,478 INFO L87 Difference]: Start difference. First operand 1961 states and 3593 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 13:16:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:16:20,142 INFO L93 Difference]: Finished difference Result 1924 states and 3495 transitions. [2023-12-02 13:16:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:16:20,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 19 [2023-12-02 13:16:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:16:20,148 INFO L225 Difference]: With dead ends: 1924 [2023-12-02 13:16:20,148 INFO L226 Difference]: Without dead ends: 1924 [2023-12-02 13:16:20,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:16:20,149 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 87 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 13:16:20,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 22 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 13:16:20,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1924 states. [2023-12-02 13:16:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1924 to 1924. [2023-12-02 13:16:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1901 states have (on average 1.838506049447659) internal successors, (3495), 1923 states have internal predecessors, (3495), 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 13:16:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3495 transitions. [2023-12-02 13:16:20,180 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3495 transitions. Word has length 19 [2023-12-02 13:16:20,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:16:20,188 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 3495 transitions. [2023-12-02 13:16:20,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 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 13:16:20,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3495 transitions. [2023-12-02 13:16:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 13:16:20,189 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:16:20,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:16:20,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 (38)] Ended with exit code 0 [2023-12-02 13:16:20,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:16:20,389 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-12-02 13:16:20,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:16:20,390 INFO L85 PathProgramCache]: Analyzing trace with hash 2043082550, now seen corresponding path program 1 times [2023-12-02 13:16:20,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:16:20,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204541543] [2023-12-02 13:16:20,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:16:20,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:16:20,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:16:20,391 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 13:16:20,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/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 (39)] Waiting until timeout for monitored process [2023-12-02 13:16:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:16:20,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-02 13:16:20,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:16:20,784 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 11 treesize of output 7 [2023-12-02 13:16:20,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:20,797 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 1 [2023-12-02 13:16:20,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:20,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-12-02 13:16:20,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:20,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 13:16:20,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:20,840 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 1 [2023-12-02 13:16:20,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:20,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-12-02 13:16:20,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:20,941 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 13:16:20,965 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:16:20,965 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 13:16:21,055 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 13:16:21,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-12-02 13:16:21,152 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 13:16:21,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2023-12-02 13:16:21,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:16:21,605 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:16:25,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 47 treesize of output 43 [2023-12-02 13:16:25,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:16:25,842 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:16:25,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204541543] [2023-12-02 13:16:25,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204541543] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:16:25,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [642803892] [2023-12-02 13:16:25,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:16:25,842 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:16:25,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:16:25,843 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:16:25,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2023-12-02 13:16:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:16:26,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 29 conjunts are in the unsatisfiable core [2023-12-02 13:16:26,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:16:26,803 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 13:16:26,813 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 8 treesize of output 7 [2023-12-02 13:16:26,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:26,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:16:26,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:26,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 13:16:26,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:26,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:16:26,895 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 13:16:26,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:26,910 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 8 treesize of output 1 [2023-12-02 13:16:26,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:26,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:16:28,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:28,481 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 20 treesize of output 22 [2023-12-02 13:16:28,650 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-12-02 13:16:28,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-12-02 13:16:29,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:29,777 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 13:16:29,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2023-12-02 13:16:29,891 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:16:29,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 13:16:30,587 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 13:16:30,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2023-12-02 13:16:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:16:34,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:16:37,990 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:16:37,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [642803892] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:16:37,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71472273] [2023-12-02 13:16:37,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:16:37,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:16:37,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:16:37,991 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:16:37,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_021cc993-264d-482a-a0b3-a4ae9778176e/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-12-02 13:16:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:16:38,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 43 conjunts are in the unsatisfiable core [2023-12-02 13:16:38,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:16:38,269 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 8 treesize of output 7 [2023-12-02 13:16:38,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:38,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:16:38,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:38,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-12-02 13:16:38,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:38,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:16:38,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:38,341 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 8 treesize of output 1 [2023-12-02 13:16:38,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:38,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-02 13:16:39,199 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 13:16:39,248 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-12-02 13:16:39,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 22 [2023-12-02 13:16:40,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:16:40,593 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-12-02 13:16:40,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 44 [2023-12-02 13:16:40,627 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:16:40,628 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 13:16:42,239 INFO L349 Elim1Store]: treesize reduction 60, result has 67.7 percent of original size [2023-12-02 13:16:42,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 212