./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/head-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/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_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/head-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/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 64bit --witnessprinter.graph.data.programhash cba5a963119dc53e5779ba4def398ef43e1b516dbff57f313e5d5d7dfbebfbb9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:35:51,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:35:51,154 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2023-12-02 13:35:51,158 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:35:51,159 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:35:51,183 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:35:51,183 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:35:51,184 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:35:51,185 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:35:51,185 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:35:51,186 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:35:51,186 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:35:51,187 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:35:51,187 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:35:51,188 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:35:51,188 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:35:51,189 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:35:51,189 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:35:51,190 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:35:51,190 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:35:51,191 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:35:51,192 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:35:51,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 13:35:51,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 13:35:51,193 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:35:51,194 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:35:51,194 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:35:51,194 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 13:35:51,195 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 13:35:51,195 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 13:35:51,196 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:35:51,196 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:35:51,196 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:35:51,197 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:35:51,197 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:35:51,197 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:35:51,198 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:35:51,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:35:51,198 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:35:51,198 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:35:51,199 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:35:51,199 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:35:51,199 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:35:51,199 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:35:51,200 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:35:51,200 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_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cba5a963119dc53e5779ba4def398ef43e1b516dbff57f313e5d5d7dfbebfbb9 [2023-12-02 13:35:51,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:35:51,440 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:35:51,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:35:51,444 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:35:51,444 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:35:51,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/busybox-1.22.0/head-1.i [2023-12-02 13:35:54,216 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:35:54,532 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:35:54,532 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/sv-benchmarks/c/busybox-1.22.0/head-1.i [2023-12-02 13:35:54,561 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/data/9a432ce7a/6e7e7ffedf024ca09a3c9448b3f86a8d/FLAG5e4200a0a [2023-12-02 13:35:54,574 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/data/9a432ce7a/6e7e7ffedf024ca09a3c9448b3f86a8d [2023-12-02 13:35:54,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:35:54,577 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:35:54,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:35:54,578 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:35:54,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:35:54,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:35:54" (1/1) ... [2023-12-02 13:35:54,585 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c4bab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:35:54, skipping insertion in model container [2023-12-02 13:35:54,586 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:35:54" (1/1) ... [2023-12-02 13:35:54,671 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:35:55,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:35:55,808 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 13:35:55,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e3e4c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:35:55, skipping insertion in model container [2023-12-02 13:35:55,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:35:55,809 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 13:35:55,810 INFO L158 Benchmark]: Toolchain (without parser) took 1232.97ms. Allocated memory is still 163.6MB. Free memory was 113.2MB in the beginning and 79.8MB in the end (delta: 33.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-12-02 13:35:55,811 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory is still 67.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:35:55,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1230.74ms. Allocated memory is still 163.6MB. Free memory was 112.8MB in the beginning and 79.8MB in the end (delta: 33.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-12-02 13:35:55,813 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory is still 67.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1230.74ms. Allocated memory is still 163.6MB. Free memory was 112.8MB in the beginning and 79.8MB in the end (delta: 33.1MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2251]: 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_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/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_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/head-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/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 64bit --witnessprinter.graph.data.programhash cba5a963119dc53e5779ba4def398ef43e1b516dbff57f313e5d5d7dfbebfbb9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:35:57,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:35:57,604 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2023-12-02 13:35:57,610 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:35:57,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:35:57,639 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:35:57,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:35:57,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:35:57,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:35:57,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:35:57,642 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:35:57,642 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:35:57,643 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:35:57,643 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:35:57,644 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:35:57,644 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:35:57,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 13:35:57,646 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 13:35:57,646 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:35:57,647 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:35:57,647 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:35:57,648 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 13:35:57,648 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 13:35:57,649 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 13:35:57,649 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:35:57,650 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:35:57,650 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:35:57,650 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:35:57,651 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:35:57,651 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:35:57,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:35:57,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:35:57,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:35:57,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:35:57,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:35:57,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:35:57,653 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:35:57,654 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:35:57,654 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:35:57,654 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:35:57,654 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:35:57,655 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:35:57,655 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_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cba5a963119dc53e5779ba4def398ef43e1b516dbff57f313e5d5d7dfbebfbb9 [2023-12-02 13:35:57,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:35:57,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:35:57,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:35:57,950 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:35:57,950 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:35:57,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/busybox-1.22.0/head-1.i [2023-12-02 13:36:00,669 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:36:01,012 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:36:01,013 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/sv-benchmarks/c/busybox-1.22.0/head-1.i [2023-12-02 13:36:01,041 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/data/41ee84da5/fe9672ee85594bcf86bf18dd54b55822/FLAG8094a3a59 [2023-12-02 13:36:01,057 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/data/41ee84da5/fe9672ee85594bcf86bf18dd54b55822 [2023-12-02 13:36:01,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:36:01,061 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:36:01,062 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:36:01,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:36:01,068 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:36:01,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:36:01" (1/1) ... [2023-12-02 13:36:01,070 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a5a065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:01, skipping insertion in model container [2023-12-02 13:36:01,070 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:36:01" (1/1) ... [2023-12-02 13:36:01,144 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:36:02,147 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:36:02,181 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 13:36:02,206 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:36:02,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:36:02,321 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:36:02,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:36:02,614 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:36:02,614 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:36:02,615 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:36:02,615 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:36:02,615 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:36:02,615 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:36:02,615 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:36:02,616 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:36:02,616 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:36:02,624 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:36:02,624 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:02 WrapperNode [2023-12-02 13:36:02,624 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:36:02,625 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:36:02,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:36:02,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:36:02,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:02" (1/1) ... [2023-12-02 13:36:02,684 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:02" (1/1) ... [2023-12-02 13:36:02,760 INFO L138 Inliner]: procedures = 595, calls = 371, calls flagged for inlining = 30, calls inlined = 28, statements flattened = 1097 [2023-12-02 13:36:02,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:36:02,762 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:36:02,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:36:02,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:36:02,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:02" (1/1) ... [2023-12-02 13:36:02,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:02" (1/1) ... [2023-12-02 13:36:02,789 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:02" (1/1) ... [2023-12-02 13:36:02,789 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:02" (1/1) ... [2023-12-02 13:36:02,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:02" (1/1) ... [2023-12-02 13:36:02,853 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:02" (1/1) ... [2023-12-02 13:36:02,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:02" (1/1) ... [2023-12-02 13:36:02,878 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:02" (1/1) ... [2023-12-02 13:36:02,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:36:02,891 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:36:02,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:36:02,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:36:02,892 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:02" (1/1) ... [2023-12-02 13:36:02,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:36:02,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:36:02,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:36:02,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:36:02,956 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-12-02 13:36:02,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-12-02 13:36:02,957 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-12-02 13:36:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2023-12-02 13:36:02,957 INFO L138 BoogieDeclarations]: Found implementation of procedure _IO_getc [2023-12-02 13:36:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-12-02 13:36:02,957 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-12-02 13:36:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-12-02 13:36:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:36:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:36:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 13:36:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-12-02 13:36:02,958 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-12-02 13:36:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-12-02 13:36:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:36:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-12-02 13:36:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-12-02 13:36:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:36:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:36:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-12-02 13:36:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-12-02 13:36:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-12-02 13:36:02,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-12-02 13:36:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:36:02,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:36:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 13:36:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 13:36:02,960 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 13:36:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-12-02 13:36:02,960 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-12-02 13:36:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure getopt [2023-12-02 13:36:02,960 INFO L138 BoogieDeclarations]: Found implementation of procedure getopt [2023-12-02 13:36:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 13:36:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 13:36:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 13:36:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-12-02 13:36:02,961 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-12-02 13:36:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-12-02 13:36:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:36:02,961 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:36:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:36:02,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:36:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-12-02 13:36:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-12-02 13:36:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-12-02 13:36:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 13:36:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-12-02 13:36:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-12-02 13:36:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-12-02 13:36:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-12-02 13:36:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-12-02 13:36:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-12-02 13:36:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc_fgets [2023-12-02 13:36:02,963 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc_fgets [2023-12-02 13:36:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-12-02 13:36:02,963 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-12-02 13:36:03,381 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:36:03,384 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:36:10,210 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:36:10,386 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:36:10,386 INFO L309 CfgBuilder]: Removed 18 assume(true) statements. [2023-12-02 13:36:10,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:36:10 BoogieIcfgContainer [2023-12-02 13:36:10,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:36:10,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:36:10,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:36:10,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:36:10,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:36:01" (1/3) ... [2023-12-02 13:36:10,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5937cd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:36:10, skipping insertion in model container [2023-12-02 13:36:10,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:36:02" (2/3) ... [2023-12-02 13:36:10,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5937cd7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:36:10, skipping insertion in model container [2023-12-02 13:36:10,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:36:10" (3/3) ... [2023-12-02 13:36:10,396 INFO L112 eAbstractionObserver]: Analyzing ICFG head-1.i [2023-12-02 13:36:10,415 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:36:10,416 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 273 error locations. [2023-12-02 13:36:10,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:36:10,482 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;@5373d4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:36:10,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 273 error locations. [2023-12-02 13:36:10,490 INFO L276 IsEmpty]: Start isEmpty. Operand has 686 states, 371 states have (on average 2.078167115902965) internal successors, (771), 644 states have internal predecessors, (771), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-12-02 13:36:10,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 13:36:10,496 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:36:10,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 13:36:10,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:36:10,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:36:10,503 INFO L85 PathProgramCache]: Analyzing trace with hash 49645, now seen corresponding path program 1 times [2023-12-02 13:36:10,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:36:10,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625496349] [2023-12-02 13:36:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:10,519 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 13:36:10,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:36:10,521 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:10,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:10,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:36:10,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:10,924 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 13:36:10,940 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 13:36:10,940 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:36:10,941 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:36:10,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625496349] [2023-12-02 13:36:10,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625496349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:36:10,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:36:10,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:36:10,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691668333] [2023-12-02 13:36:10,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:36:10,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:36:10,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:36:10,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:36:10,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:36:10,970 INFO L87 Difference]: Start difference. First operand has 686 states, 371 states have (on average 2.078167115902965) internal successors, (771), 644 states have internal predecessors, (771), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:36:13,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:36:13,560 INFO L93 Difference]: Finished difference Result 856 states and 1018 transitions. [2023-12-02 13:36:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:36:13,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 13:36:13,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:36:13,579 INFO L225 Difference]: With dead ends: 856 [2023-12-02 13:36:13,579 INFO L226 Difference]: Without dead ends: 855 [2023-12-02 13:36:13,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:36:13,583 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 265 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:36:13,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 1055 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 13:36:13,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2023-12-02 13:36:13,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 671. [2023-12-02 13:36:13,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 364 states have (on average 2.0027472527472527) internal successors, (729), 634 states have internal predecessors, (729), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:36:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 786 transitions. [2023-12-02 13:36:13,657 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 786 transitions. Word has length 2 [2023-12-02 13:36:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:36:13,657 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 786 transitions. [2023-12-02 13:36:13,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:36:13,657 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 786 transitions. [2023-12-02 13:36:13,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 13:36:13,658 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:36:13,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 13:36:13,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:13,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:13,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:36:13,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:36:13,859 INFO L85 PathProgramCache]: Analyzing trace with hash 49646, now seen corresponding path program 1 times [2023-12-02 13:36:13,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:36:13,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040850483] [2023-12-02 13:36:13,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:13,861 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 13:36:13,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:36:13,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:13,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:14,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:36:14,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:14,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:36:14,163 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 13:36:14,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:36:14,164 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:36:14,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040850483] [2023-12-02 13:36:14,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040850483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:36:14,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:36:14,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:36:14,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702770418] [2023-12-02 13:36:14,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:36:14,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:36:14,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:36:14,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:36:14,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:36:14,167 INFO L87 Difference]: Start difference. First operand 671 states and 786 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:36:17,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:36:17,346 INFO L93 Difference]: Finished difference Result 670 states and 785 transitions. [2023-12-02 13:36:17,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:36:17,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-12-02 13:36:17,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:36:17,351 INFO L225 Difference]: With dead ends: 670 [2023-12-02 13:36:17,351 INFO L226 Difference]: Without dead ends: 670 [2023-12-02 13:36:17,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:36:17,352 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 9 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:36:17,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1202 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-02 13:36:17,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-12-02 13:36:17,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 670. [2023-12-02 13:36:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 364 states have (on average 2.0) internal successors, (728), 633 states have internal predecessors, (728), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:36:17,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 785 transitions. [2023-12-02 13:36:17,370 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 785 transitions. Word has length 2 [2023-12-02 13:36:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:36:17,371 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 785 transitions. [2023-12-02 13:36:17,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:36:17,371 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 785 transitions. [2023-12-02 13:36:17,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 13:36:17,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:36:17,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 13:36:17,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:17,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:17,572 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:36:17,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:36:17,572 INFO L85 PathProgramCache]: Analyzing trace with hash 48607779, now seen corresponding path program 1 times [2023-12-02 13:36:17,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:36:17,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101223490] [2023-12-02 13:36:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:17,574 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 13:36:17,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:36:17,575 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:17,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:17,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:36:17,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:17,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:36:17,935 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 13:36:17,935 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:36:17,935 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:36:17,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101223490] [2023-12-02 13:36:17,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101223490] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:36:17,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:36:17,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:36:17,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22083259] [2023-12-02 13:36:17,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:36:17,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:36:17,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:36:17,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:36:17,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:36:17,937 INFO L87 Difference]: Start difference. First operand 670 states and 785 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 13:36:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:36:21,055 INFO L93 Difference]: Finished difference Result 672 states and 787 transitions. [2023-12-02 13:36:21,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:36:21,057 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-12-02 13:36:21,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:36:21,060 INFO L225 Difference]: With dead ends: 672 [2023-12-02 13:36:21,060 INFO L226 Difference]: Without dead ends: 672 [2023-12-02 13:36:21,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 13:36:21,061 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 9 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:36:21,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1202 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-02 13:36:21,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-12-02 13:36:21,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2023-12-02 13:36:21,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 366 states have (on average 1.994535519125683) internal successors, (730), 635 states have internal predecessors, (730), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:36:21,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 787 transitions. [2023-12-02 13:36:21,079 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 787 transitions. Word has length 4 [2023-12-02 13:36:21,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:36:21,079 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 787 transitions. [2023-12-02 13:36:21,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 13:36:21,080 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 787 transitions. [2023-12-02 13:36:21,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 13:36:21,080 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:36:21,080 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-12-02 13:36:21,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 13:36:21,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:21,281 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:36:21,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:36:21,281 INFO L85 PathProgramCache]: Analyzing trace with hash -531675313, now seen corresponding path program 1 times [2023-12-02 13:36:21,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:36:21,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096442243] [2023-12-02 13:36:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:21,283 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 13:36:21,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:36:21,284 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:21,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:21,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:36:21,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:21,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:36:21,772 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 13:36:21,773 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:36:22,418 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 13:36:22,418 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:36:22,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096442243] [2023-12-02 13:36:22,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096442243] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:36:22,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1213448049] [2023-12-02 13:36:22,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:22,419 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:36:22,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:36:22,420 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:36:22,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2023-12-02 13:36:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:22,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:36:22,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:23,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:36:23,078 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 13:36:23,078 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:36:23,287 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 13:36:23,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1213448049] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:36:23,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085237374] [2023-12-02 13:36:23,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:23,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:36:23,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:36:23,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:36:23,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 13:36:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:23,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:36:23,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:23,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:36:23,653 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 13:36:23,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:36:23,846 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 13:36:23,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085237374] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:36:23,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:36:23,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3, 3, 3, 3] total 6 [2023-12-02 13:36:23,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214576173] [2023-12-02 13:36:23,846 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:36:23,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:36:23,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:36:23,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:36:23,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:36:23,847 INFO L87 Difference]: Start difference. First operand 672 states and 787 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 13:36:38,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:36:38,556 INFO L93 Difference]: Finished difference Result 674 states and 789 transitions. [2023-12-02 13:36:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:36:38,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 13:36:38,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:36:38,562 INFO L225 Difference]: With dead ends: 674 [2023-12-02 13:36:38,562 INFO L226 Difference]: Without dead ends: 674 [2023-12-02 13:36:38,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:36:38,563 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 10 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 1217 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 1221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:36:38,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2687 Invalid, 1221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1217 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2023-12-02 13:36:38,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-12-02 13:36:38,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2023-12-02 13:36:38,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 369 states have (on average 1.983739837398374) internal successors, (732), 637 states have internal predecessors, (732), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:36:38,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 789 transitions. [2023-12-02 13:36:38,583 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 789 transitions. Word has length 6 [2023-12-02 13:36:38,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:36:38,584 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 789 transitions. [2023-12-02 13:36:38,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 13:36:38,584 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 789 transitions. [2023-12-02 13:36:38,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 13:36:38,584 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:36:38,584 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-12-02 13:36:38,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-12-02 13:36:38,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 13:36:38,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2023-12-02 13:36:39,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:36:39,185 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:36:39,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:36:39,186 INFO L85 PathProgramCache]: Analyzing trace with hash -725569535, now seen corresponding path program 1 times [2023-12-02 13:36:39,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:36:39,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808994950] [2023-12-02 13:36:39,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:39,187 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:36:39,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:36:39,188 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:39,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 13:36:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:39,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:36:39,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:36:39,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:36:39,601 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:36:39,602 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:36:39,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808994950] [2023-12-02 13:36:39,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808994950] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:36:39,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1479719949] [2023-12-02 13:36:39,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:39,602 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:36:39,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:36:39,603 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:36:39,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2023-12-02 13:36:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:40,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:36:40,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:40,211 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:36:40,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:36:40,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:36:40,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1479719949] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:36:40,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382095541] [2023-12-02 13:36:40,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:40,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:36:40,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:36:40,243 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:36:40,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 13:36:40,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:40,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:36:40,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:40,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:36:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:36:40,769 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:36:41,341 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:36:41,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382095541] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:36:41,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:36:41,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 18 [2023-12-02 13:36:41,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365669894] [2023-12-02 13:36:41,341 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:36:41,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 13:36:41,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:36:41,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 13:36:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-12-02 13:36:41,343 INFO L87 Difference]: Start difference. First operand 674 states and 789 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:36:53,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:36:53,559 INFO L93 Difference]: Finished difference Result 684 states and 799 transitions. [2023-12-02 13:36:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 13:36:53,562 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-02 13:36:53,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:36:53,565 INFO L225 Difference]: With dead ends: 684 [2023-12-02 13:36:53,565 INFO L226 Difference]: Without dead ends: 684 [2023-12-02 13:36:53,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2023-12-02 13:36:53,566 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 23 mSDsluCounter, 4594 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 5300 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:36:53,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 5300 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2023-12-02 13:36:53,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-12-02 13:36:53,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2023-12-02 13:36:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 379 states have (on average 1.95778364116095) internal successors, (742), 647 states have internal predecessors, (742), 31 states have call successors, (31), 11 states have call predecessors, (31), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:36:53,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 799 transitions. [2023-12-02 13:36:53,585 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 799 transitions. Word has length 11 [2023-12-02 13:36:53,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:36:53,585 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 799 transitions. [2023-12-02 13:36:53,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:36:53,585 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 799 transitions. [2023-12-02 13:36:53,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 13:36:53,586 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:36:53,586 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2023-12-02 13:36:53,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2023-12-02 13:36:53,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-12-02 13:36:54,002 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 13:36:54,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:36:54,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:36:54,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:36:54,193 INFO L85 PathProgramCache]: Analyzing trace with hash 676431013, now seen corresponding path program 2 times [2023-12-02 13:36:54,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:36:54,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971631501] [2023-12-02 13:36:54,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:36:54,194 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 13:36:54,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:36:54,195 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:54,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:54,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 13:36:54,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:36:54,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:36:54,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:54,613 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-12-02 13:36:54,613 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 13:36:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-02 13:36:54,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:36:54,784 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:36:54,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971631501] [2023-12-02 13:36:54,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971631501] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:36:54,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:36:54,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:36:54,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395062963] [2023-12-02 13:36:54,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:36:54,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:36:54,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:36:54,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:36:54,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:36:54,785 INFO L87 Difference]: Start difference. First operand 684 states and 799 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:36:57,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:36:57,728 INFO L93 Difference]: Finished difference Result 1196 states and 1422 transitions. [2023-12-02 13:36:57,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:36:57,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-12-02 13:36:57,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:36:57,735 INFO L225 Difference]: With dead ends: 1196 [2023-12-02 13:36:57,735 INFO L226 Difference]: Without dead ends: 1196 [2023-12-02 13:36:57,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 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 13:36:57,736 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 644 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:36:57,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 979 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-12-02 13:36:57,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2023-12-02 13:36:57,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 984. [2023-12-02 13:36:57,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 644 states have (on average 1.984472049689441) internal successors, (1278), 919 states have internal predecessors, (1278), 60 states have call successors, (60), 22 states have call predecessors, (60), 17 states have return successors, (54), 43 states have call predecessors, (54), 50 states have call successors, (54) [2023-12-02 13:36:57,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1392 transitions. [2023-12-02 13:36:57,770 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1392 transitions. Word has length 21 [2023-12-02 13:36:57,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:36:57,770 INFO L495 AbstractCegarLoop]: Abstraction has 984 states and 1392 transitions. [2023-12-02 13:36:57,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:36:57,770 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1392 transitions. [2023-12-02 13:36:57,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 13:36:57,771 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:36:57,771 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 1, 1, 1, 1, 1] [2023-12-02 13:36:57,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:57,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:57,972 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:36:57,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:36:57,972 INFO L85 PathProgramCache]: Analyzing trace with hash 676431014, now seen corresponding path program 1 times [2023-12-02 13:36:57,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:36:57,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847368236] [2023-12-02 13:36:57,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:57,973 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 13:36:57,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:36:57,974 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:57,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:36:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:58,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:36:58,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:58,472 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:36:58,472 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:36:58,853 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:36:58,853 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:36:58,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847368236] [2023-12-02 13:36:58,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847368236] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:36:58,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1657455900] [2023-12-02 13:36:58,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:58,854 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:36:58,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:36:58,855 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:36:58,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2023-12-02 13:36:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:59,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 13:36:59,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:36:59,573 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:36:59,649 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:36:59,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1657455900] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:36:59,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794296006] [2023-12-02 13:36:59,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:36:59,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:36:59,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:36:59,650 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:36:59,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 13:36:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:36:59,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-02 13:36:59,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:36:59,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:37:00,705 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:37:00,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:37:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:37:06,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794296006] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:37:06,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:37:06,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 12] total 38 [2023-12-02 13:37:06,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432510738] [2023-12-02 13:37:06,384 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:37:06,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 13:37:06,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:37:06,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 13:37:06,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1035, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 13:37:06,386 INFO L87 Difference]: Start difference. First operand 984 states and 1392 transitions. Second operand has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 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 13:37:44,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:37:44,644 INFO L93 Difference]: Finished difference Result 1004 states and 1413 transitions. [2023-12-02 13:37:44,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 13:37:44,647 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 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 21 [2023-12-02 13:37:44,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:37:44,651 INFO L225 Difference]: With dead ends: 1004 [2023-12-02 13:37:44,651 INFO L226 Difference]: Without dead ends: 1004 [2023-12-02 13:37:44,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=601, Invalid=1849, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 13:37:44,652 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 44 mSDsluCounter, 6358 mSDsCounter, 0 mSdLazyCounter, 3267 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7062 SdHoareTripleChecker+Invalid, 3286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 3267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:37:44,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7062 Invalid, 3286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 3267 Invalid, 0 Unknown, 0 Unchecked, 35.4s Time] [2023-12-02 13:37:44,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-12-02 13:37:44,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 1004. [2023-12-02 13:37:44,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 664 states have (on average 1.9563253012048192) internal successors, (1299), 939 states have internal predecessors, (1299), 60 states have call successors, (60), 22 states have call predecessors, (60), 17 states have return successors, (54), 43 states have call predecessors, (54), 50 states have call successors, (54) [2023-12-02 13:37:44,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1413 transitions. [2023-12-02 13:37:44,677 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1413 transitions. Word has length 21 [2023-12-02 13:37:44,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:37:44,677 INFO L495 AbstractCegarLoop]: Abstraction has 1004 states and 1413 transitions. [2023-12-02 13:37:44,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 38 states have internal predecessors, (74), 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 13:37:44,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1413 transitions. [2023-12-02 13:37:44,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 13:37:44,678 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:37:44,678 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1] [2023-12-02 13:37:44,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:37:44,885 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2023-12-02 13:37:45,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 13:37:45,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:37:45,279 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:37:45,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:37:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1296339022, now seen corresponding path program 2 times [2023-12-02 13:37:45,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:37:45,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880764606] [2023-12-02 13:37:45,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:37:45,280 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 13:37:45,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:37:45,281 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:37:45,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-12-02 13:37:45,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 13:37:45,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:37:45,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 13:37:45,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:37:45,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:37:45,721 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 13:37:46,021 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:37:46,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:37:46,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:37:46,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880764606] [2023-12-02 13:37:46,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880764606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:37:46,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:37:46,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:37:46,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665044301] [2023-12-02 13:37:46,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:37:46,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:37:46,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:37:46,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:37:46,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:37:46,023 INFO L87 Difference]: Start difference. First operand 1004 states and 1413 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:37:48,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:37:48,996 INFO L93 Difference]: Finished difference Result 1007 states and 1415 transitions. [2023-12-02 13:37:48,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:37:48,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-12-02 13:37:48,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:37:49,002 INFO L225 Difference]: With dead ends: 1007 [2023-12-02 13:37:49,002 INFO L226 Difference]: Without dead ends: 1007 [2023-12-02 13:37:49,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:37:49,003 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 6 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:37:49,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1208 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-02 13:37:49,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2023-12-02 13:37:49,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 706. [2023-12-02 13:37:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 402 states have (on average 1.900497512437811) internal successors, (764), 668 states have internal predecessors, (764), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:37:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 821 transitions. [2023-12-02 13:37:49,017 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 821 transitions. Word has length 25 [2023-12-02 13:37:49,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:37:49,017 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 821 transitions. [2023-12-02 13:37:49,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:37:49,017 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 821 transitions. [2023-12-02 13:37:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 13:37:49,018 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:37:49,018 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:37:49,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Forceful destruction successful, exit code 0 [2023-12-02 13:37:49,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:37:49,219 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:37:49,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:37:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash 2002966384, now seen corresponding path program 1 times [2023-12-02 13:37:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:37:49,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418601083] [2023-12-02 13:37:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:37:49,220 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 13:37:49,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:37:49,221 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:37:49,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-02 13:37:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:37:49,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:37:49,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:37:49,984 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 13:37:49,984 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-12-02 13:37:50,020 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:37:50,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:37:50,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:37:50,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418601083] [2023-12-02 13:37:50,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418601083] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:37:50,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:37:50,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:37:50,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664273524] [2023-12-02 13:37:50,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:37:50,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:37:50,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:37:50,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:37:50,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:37:50,023 INFO L87 Difference]: Start difference. First operand 706 states and 821 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:37:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:37:55,543 INFO L93 Difference]: Finished difference Result 885 states and 1047 transitions. [2023-12-02 13:37:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:37:55,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2023-12-02 13:37:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:37:55,548 INFO L225 Difference]: With dead ends: 885 [2023-12-02 13:37:55,548 INFO L226 Difference]: Without dead ends: 885 [2023-12-02 13:37:55,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 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 13:37:55,549 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 250 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:37:55,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1056 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2023-12-02 13:37:55,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-12-02 13:37:55,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 701. [2023-12-02 13:37:55,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 402 states have (on average 1.8880597014925373) internal successors, (759), 663 states have internal predecessors, (759), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:37:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 816 transitions. [2023-12-02 13:37:55,567 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 816 transitions. Word has length 32 [2023-12-02 13:37:55,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:37:55,568 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 816 transitions. [2023-12-02 13:37:55,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:37:55,568 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 816 transitions. [2023-12-02 13:37:55,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 13:37:55,569 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:37:55,569 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:37:55,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-02 13:37:55,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:37:55,770 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:37:55,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:37:55,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2002966385, now seen corresponding path program 1 times [2023-12-02 13:37:55,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:37:55,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702197006] [2023-12-02 13:37:55,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:37:55,771 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 13:37:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:37:55,772 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:37:55,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:37:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:37:56,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 13:37:56,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:37:56,459 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 13:37:56,460 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 1 case distinctions, treesize of input 19 treesize of output 21 [2023-12-02 13:37:56,558 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:37:56,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:37:56,559 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:37:56,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702197006] [2023-12-02 13:37:56,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702197006] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:37:56,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:37:56,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:37:56,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765338420] [2023-12-02 13:37:56,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:37:56,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:37:56,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:37:56,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:37:56,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:37:56,560 INFO L87 Difference]: Start difference. First operand 701 states and 816 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:38:04,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:04,260 INFO L93 Difference]: Finished difference Result 702 states and 818 transitions. [2023-12-02 13:38:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:38:04,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2023-12-02 13:38:04,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:04,265 INFO L225 Difference]: With dead ends: 702 [2023-12-02 13:38:04,265 INFO L226 Difference]: Without dead ends: 702 [2023-12-02 13:38:04,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:38:04,266 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 391 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 2872 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:04,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 2872 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2023-12-02 13:38:04,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-12-02 13:38:04,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 700. [2023-12-02 13:38:04,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 402 states have (on average 1.8855721393034826) internal successors, (758), 662 states have internal predecessors, (758), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:38:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 815 transitions. [2023-12-02 13:38:04,282 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 815 transitions. Word has length 32 [2023-12-02 13:38:04,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:04,282 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 815 transitions. [2023-12-02 13:38:04,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:38:04,283 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 815 transitions. [2023-12-02 13:38:04,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 13:38:04,284 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:04,284 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:04,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:04,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:04,495 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:38:04,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:04,495 INFO L85 PathProgramCache]: Analyzing trace with hash 706231831, now seen corresponding path program 1 times [2023-12-02 13:38:04,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:04,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604655432] [2023-12-02 13:38:04,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:04,496 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 13:38:04,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:04,497 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:04,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-12-02 13:38:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:05,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 13:38:05,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:05,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:38:05,223 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 16 treesize of output 10 [2023-12-02 13:38:05,250 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 13:38:05,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:38:05,507 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 19 treesize of output 14 [2023-12-02 13:38:05,527 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:38:05,527 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 13:38:05,635 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:38:05,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:05,635 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:05,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604655432] [2023-12-02 13:38:05,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604655432] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:05,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:05,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 13:38:05,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231117022] [2023-12-02 13:38:05,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:05,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:38:05,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:05,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:38:05,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:38:05,636 INFO L87 Difference]: Start difference. First operand 700 states and 815 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:38:12,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:12,975 INFO L93 Difference]: Finished difference Result 718 states and 835 transitions. [2023-12-02 13:38:12,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:38:12,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2023-12-02 13:38:12,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:12,979 INFO L225 Difference]: With dead ends: 718 [2023-12-02 13:38:12,979 INFO L226 Difference]: Without dead ends: 718 [2023-12-02 13:38:12,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:38:12,980 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 441 mSDsluCounter, 2176 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 2859 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:12,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 2859 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-12-02 13:38:12,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2023-12-02 13:38:12,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 709. [2023-12-02 13:38:12,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 411 states have (on average 1.8832116788321167) internal successors, (774), 671 states have internal predecessors, (774), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:38:13,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 831 transitions. [2023-12-02 13:38:13,000 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 831 transitions. Word has length 34 [2023-12-02 13:38:13,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:13,001 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 831 transitions. [2023-12-02 13:38:13,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:38:13,001 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 831 transitions. [2023-12-02 13:38:13,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 13:38:13,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:13,002 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:13,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-12-02 13:38:13,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:13,215 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:38:13,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:13,215 INFO L85 PathProgramCache]: Analyzing trace with hash 84834711, now seen corresponding path program 1 times [2023-12-02 13:38:13,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:13,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185845828] [2023-12-02 13:38:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:13,216 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 13:38:13,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:13,217 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:13,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-02 13:38:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:13,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 13:38:13,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:13,878 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 13:38:13,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:38:13,893 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 13:38:13,928 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-12-02 13:38:13,928 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 13:38:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:38:13,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:13,959 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:13,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185845828] [2023-12-02 13:38:13,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185845828] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:13,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:13,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:38:13,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742152618] [2023-12-02 13:38:13,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:13,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:38:13,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:13,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:38:13,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:38:13,960 INFO L87 Difference]: Start difference. First operand 709 states and 831 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:38:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:16,494 INFO L93 Difference]: Finished difference Result 892 states and 1060 transitions. [2023-12-02 13:38:16,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:38:16,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-12-02 13:38:16,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:16,500 INFO L225 Difference]: With dead ends: 892 [2023-12-02 13:38:16,500 INFO L226 Difference]: Without dead ends: 892 [2023-12-02 13:38:16,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 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 13:38:16,500 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 250 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:16,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 1053 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 13:38:16,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2023-12-02 13:38:16,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 708. [2023-12-02 13:38:16,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 411 states have (on average 1.878345498783455) internal successors, (772), 670 states have internal predecessors, (772), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:38:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 829 transitions. [2023-12-02 13:38:16,513 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 829 transitions. Word has length 36 [2023-12-02 13:38:16,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:16,514 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 829 transitions. [2023-12-02 13:38:16,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:38:16,514 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 829 transitions. [2023-12-02 13:38:16,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-12-02 13:38:16,515 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:16,515 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:16,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-12-02 13:38:16,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:16,719 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:38:16,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:16,719 INFO L85 PathProgramCache]: Analyzing trace with hash 84834712, now seen corresponding path program 1 times [2023-12-02 13:38:16,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:16,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723559071] [2023-12-02 13:38:16,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:16,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:38:16,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:16,721 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:16,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:17,508 INFO L262 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-02 13:38:17,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:17,570 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 11 treesize of output 10 [2023-12-02 13:38:17,593 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 13:38:17,608 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 16 treesize of output 10 [2023-12-02 13:38:17,637 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 13:38:17,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 13:38:17,904 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 19 treesize of output 14 [2023-12-02 13:38:17,922 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:38:17,923 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 13:38:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:38:18,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:18,107 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:18,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723559071] [2023-12-02 13:38:18,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723559071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:18,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:18,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 13:38:18,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649698904] [2023-12-02 13:38:18,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:18,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:38:18,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:18,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:38:18,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:38:18,109 INFO L87 Difference]: Start difference. First operand 708 states and 829 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:38:33,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:33,762 INFO L93 Difference]: Finished difference Result 897 states and 1060 transitions. [2023-12-02 13:38:33,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:38:33,764 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2023-12-02 13:38:33,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:33,768 INFO L225 Difference]: With dead ends: 897 [2023-12-02 13:38:33,768 INFO L226 Difference]: Without dead ends: 897 [2023-12-02 13:38:33,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:38:33,769 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 889 mSDsluCounter, 2183 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 1478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:33,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 2741 Invalid, 1478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 15.4s Time] [2023-12-02 13:38:33,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-12-02 13:38:33,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 708. [2023-12-02 13:38:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 411 states have (on average 1.8759124087591241) internal successors, (771), 670 states have internal predecessors, (771), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:38:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 828 transitions. [2023-12-02 13:38:33,780 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 828 transitions. Word has length 36 [2023-12-02 13:38:33,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:33,781 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 828 transitions. [2023-12-02 13:38:33,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:38:33,781 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 828 transitions. [2023-12-02 13:38:33,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 13:38:33,781 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:33,782 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:33,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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)] Ended with exit code 0 [2023-12-02 13:38:33,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:33,987 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:38:33,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:33,987 INFO L85 PathProgramCache]: Analyzing trace with hash -77347085, now seen corresponding path program 1 times [2023-12-02 13:38:33,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:33,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438824576] [2023-12-02 13:38:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:33,988 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 13:38:33,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:33,989 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:33,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:34,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 13:38:34,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:34,748 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 6 treesize of output 7 [2023-12-02 13:38:34,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-12-02 13:38:34,925 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 13:38:34,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2023-12-02 13:38:35,023 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-12-02 13:38:35,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 14 [2023-12-02 13:38:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:38:35,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:35,059 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:35,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438824576] [2023-12-02 13:38:35,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438824576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:35,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:35,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 13:38:35,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962429574] [2023-12-02 13:38:35,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:35,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:38:35,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:35,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:38:35,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:38:35,061 INFO L87 Difference]: Start difference. First operand 708 states and 828 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:38:43,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:38:45,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:38:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:47,992 INFO L93 Difference]: Finished difference Result 705 states and 824 transitions. [2023-12-02 13:38:47,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 13:38:47,994 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-12-02 13:38:47,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:47,997 INFO L225 Difference]: With dead ends: 705 [2023-12-02 13:38:47,997 INFO L226 Difference]: Without dead ends: 705 [2023-12-02 13:38:47,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-02 13:38:47,997 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 379 mSDsluCounter, 2171 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 2856 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.9s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:47,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 2856 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1366 Invalid, 2 Unknown, 0 Unchecked, 12.9s Time] [2023-12-02 13:38:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2023-12-02 13:38:48,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 705. [2023-12-02 13:38:48,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 411 states have (on average 1.8661800486618005) internal successors, (767), 667 states have internal predecessors, (767), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:38:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 824 transitions. [2023-12-02 13:38:48,011 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 824 transitions. Word has length 38 [2023-12-02 13:38:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:48,012 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 824 transitions. [2023-12-02 13:38:48,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:38:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 824 transitions. [2023-12-02 13:38:48,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 13:38:48,013 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:48,013 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:48,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:48,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:48,219 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:38:48,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:48,219 INFO L85 PathProgramCache]: Analyzing trace with hash -77347084, now seen corresponding path program 1 times [2023-12-02 13:38:48,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:38:48,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035548337] [2023-12-02 13:38:48,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:48,220 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 13:38:48,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:38:48,221 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:48,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:38:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:48,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 13:38:48,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:48,989 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 13:38:49,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:38:49,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-12-02 13:38:49,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-12-02 13:38:49,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2023-12-02 13:38:49,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-12-02 13:38:49,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2023-12-02 13:38:49,338 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:38:49,338 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:49,338 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:38:49,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035548337] [2023-12-02 13:38:49,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035548337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:49,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:49,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:38:49,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194026631] [2023-12-02 13:38:49,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:49,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:38:49,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:38:49,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:38:49,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:38:49,339 INFO L87 Difference]: Start difference. First operand 705 states and 824 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:38:58,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:39:00,336 WARN L539 Checker$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 13:39:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:39:02,239 INFO L93 Difference]: Finished difference Result 704 states and 822 transitions. [2023-12-02 13:39:02,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:39:02,241 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2023-12-02 13:39:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:39:02,244 INFO L225 Difference]: With dead ends: 704 [2023-12-02 13:39:02,244 INFO L226 Difference]: Without dead ends: 704 [2023-12-02 13:39:02,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-02 13:39:02,245 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 376 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 1287 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 2927 SdHoareTripleChecker+Invalid, 1290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1287 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:39:02,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 2927 Invalid, 1290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1287 Invalid, 2 Unknown, 0 Unchecked, 12.8s Time] [2023-12-02 13:39:02,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2023-12-02 13:39:02,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2023-12-02 13:39:02,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 411 states have (on average 1.8613138686131387) internal successors, (765), 666 states have internal predecessors, (765), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:39:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 822 transitions. [2023-12-02 13:39:02,254 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 822 transitions. Word has length 38 [2023-12-02 13:39:02,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:39:02,254 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 822 transitions. [2023-12-02 13:39:02,254 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:39:02,255 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 822 transitions. [2023-12-02 13:39:02,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 13:39:02,255 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:39:02,255 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:39:02,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-12-02 13:39:02,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:39:02,456 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:39:02,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:39:02,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2117454105, now seen corresponding path program 1 times [2023-12-02 13:39:02,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:39:02,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [641481606] [2023-12-02 13:39:02,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:02,457 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 13:39:02,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:39:02,458 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:39:02,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:39:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:03,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 13:39:03,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:03,309 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 13:39:03,419 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 13:39:03,419 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 19 treesize of output 27 [2023-12-02 13:39:03,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-12-02 13:39:03,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2023-12-02 13:39:03,838 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:39:03,838 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2023-12-02 13:39:03,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2023-12-02 13:39:04,020 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:39:04,020 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:39:04,020 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:39:04,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [641481606] [2023-12-02 13:39:04,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [641481606] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:39:04,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:39:04,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 13:39:04,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671092689] [2023-12-02 13:39:04,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:39:04,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:39:04,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:39:04,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:39:04,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-02 13:39:04,022 INFO L87 Difference]: Start difference. First operand 704 states and 822 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:39:15,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:39:17,999 WARN L539 Checker$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 13:39:20,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:39:20,939 INFO L93 Difference]: Finished difference Result 897 states and 1065 transitions. [2023-12-02 13:39:20,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:39:20,941 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2023-12-02 13:39:20,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:39:20,945 INFO L225 Difference]: With dead ends: 897 [2023-12-02 13:39:20,945 INFO L226 Difference]: Without dead ends: 897 [2023-12-02 13:39:20,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-12-02 13:39:20,945 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 857 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 1756 mSolverCounterSat, 16 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 3063 SdHoareTripleChecker+Invalid, 1774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1756 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:39:20,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 3063 Invalid, 1774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1756 Invalid, 2 Unknown, 0 Unchecked, 16.7s Time] [2023-12-02 13:39:20,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2023-12-02 13:39:20,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 710. [2023-12-02 13:39:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 417 states have (on average 1.8609112709832134) internal successors, (776), 672 states have internal predecessors, (776), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:39:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 833 transitions. [2023-12-02 13:39:20,956 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 833 transitions. Word has length 41 [2023-12-02 13:39:20,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:39:20,956 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 833 transitions. [2023-12-02 13:39:20,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:39:20,957 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 833 transitions. [2023-12-02 13:39:20,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 13:39:20,957 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:39:20,957 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:39:20,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:39:21,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:39:21,158 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:39:21,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:39:21,158 INFO L85 PathProgramCache]: Analyzing trace with hash -2117454104, now seen corresponding path program 1 times [2023-12-02 13:39:21,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:39:21,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169298972] [2023-12-02 13:39:21,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:21,159 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 13:39:21,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:39:21,160 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:39:21,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-12-02 13:39:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:22,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 20 conjunts are in the unsatisfiable core [2023-12-02 13:39:22,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:22,052 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 13:39:22,129 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:39:22,129 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 13:39:22,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:39:22,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-12-02 13:39:22,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-12-02 13:39:22,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2023-12-02 13:39:22,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-12-02 13:39:22,615 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:39:22,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 75 [2023-12-02 13:39:22,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2023-12-02 13:39:22,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 13 [2023-12-02 13:39:22,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2023-12-02 13:39:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:39:22,850 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:39:22,850 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:39:22,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169298972] [2023-12-02 13:39:22,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169298972] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:39:22,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:39:22,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 13:39:22,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410467734] [2023-12-02 13:39:22,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:39:22,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 13:39:22,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:39:22,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 13:39:22,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:39:22,852 INFO L87 Difference]: Start difference. First operand 710 states and 833 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:39:33,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:39:35,816 WARN L539 Checker$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 13:39:37,819 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 13:39:40,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:39:40,698 INFO L93 Difference]: Finished difference Result 895 states and 1060 transitions. [2023-12-02 13:39:40,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 13:39:40,701 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2023-12-02 13:39:40,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:39:40,704 INFO L225 Difference]: With dead ends: 895 [2023-12-02 13:39:40,704 INFO L226 Difference]: Without dead ends: 895 [2023-12-02 13:39:40,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-12-02 13:39:40,705 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 604 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 1732 mSolverCounterSat, 16 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1732 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:39:40,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 2849 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1732 Invalid, 3 Unknown, 0 Unchecked, 17.4s Time] [2023-12-02 13:39:40,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2023-12-02 13:39:40,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 710. [2023-12-02 13:39:40,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 417 states have (on average 1.8513189448441247) internal successors, (772), 672 states have internal predecessors, (772), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:39:40,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 829 transitions. [2023-12-02 13:39:40,716 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 829 transitions. Word has length 41 [2023-12-02 13:39:40,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:39:40,716 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 829 transitions. [2023-12-02 13:39:40,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:39:40,716 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 829 transitions. [2023-12-02 13:39:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 13:39:40,717 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:39:40,717 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:39:40,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-12-02 13:39:40,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:39:40,917 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:39:40,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:39:40,918 INFO L85 PathProgramCache]: Analyzing trace with hash -863779139, now seen corresponding path program 1 times [2023-12-02 13:39:40,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:39:40,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1454746972] [2023-12-02 13:39:40,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:39:40,918 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 13:39:40,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:39:40,919 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:39:40,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:39:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:39:41,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 13:39:41,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:39:41,843 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 13:39:41,956 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 13:39:41,957 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 19 treesize of output 27 [2023-12-02 13:39:42,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-12-02 13:39:42,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2023-12-02 13:39:42,384 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:39:42,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2023-12-02 13:39:42,598 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:39:42,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2023-12-02 13:39:42,647 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2023-12-02 13:39:42,771 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-02 13:39:42,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:39:47,378 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1556 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1555 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem214#1.base| v_ArrVal_1555))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1556)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 13:39:47,413 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1556 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1555 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1555))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1556)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 13:39:47,450 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1554 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1556 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1555 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1554))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1555)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1556)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 13:39:47,495 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:39:47,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 78 [2023-12-02 13:39:47,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5269 treesize of output 4180 [2023-12-02 13:39:47,584 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 661 treesize of output 605 [2023-12-02 13:39:47,597 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 605 treesize of output 465 [2023-12-02 13:39:47,610 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 465 treesize of output 367 [2023-12-02 13:39:57,950 WARN L293 SmtUtils]: Spent 7.17s on a formula simplification that was a NOOP. DAG size: 485 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 13:39:57,950 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:39:57,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 196 treesize of output 1076 [2023-12-02 13:41:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:41:00,395 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:41:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1454746972] [2023-12-02 13:41:00,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1454746972] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:41:00,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1489843172] [2023-12-02 13:41:00,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:41:00,395 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:41:00,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:41:00,396 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:41:00,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-02 13:41:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:41:06,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 13:41:06,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:41:06,555 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 13:41:06,637 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 13:41:06,637 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 19 treesize of output 27 [2023-12-02 13:41:06,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-12-02 13:41:06,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2023-12-02 13:41:06,866 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:41:06,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2023-12-02 13:41:06,994 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:41:06,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2023-12-02 13:41:07,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2023-12-02 13:41:07,061 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-02 13:41:07,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:41:07,110 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1683 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem216#1.base| v_ArrVal_1683) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 13:41:07,138 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1683 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1683) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 13:41:07,485 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1682 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1683 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1682))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1683)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 13:41:07,525 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1682 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1681 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1683 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1681))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1682)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1683)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 13:41:07,567 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:41:07,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 78 [2023-12-02 13:41:07,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15013 treesize of output 11998 [2023-12-02 13:41:07,751 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 2774 treesize of output 2410 [2023-12-02 13:41:07,777 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 2410 treesize of output 1983 [2023-12-02 13:41:07,799 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 1983 treesize of output 1794 [2023-12-02 13:41:20,257 WARN L293 SmtUtils]: Spent 7.14s on a formula simplification that was a NOOP. DAG size: 485 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 13:41:20,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:41:20,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 196 treesize of output 1076 [2023-12-02 13:42:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 3 not checked. [2023-12-02 13:42:44,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1489843172] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:42:44,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737466924] [2023-12-02 13:42:44,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:42:44,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:42:44,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:42:44,067 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:42:44,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 13:42:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:42:44,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 13:42:44,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:42:44,595 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 13:42:44,679 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 13:42:44,679 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 19 treesize of output 27 [2023-12-02 13:42:44,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-12-02 13:42:44,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 31 [2023-12-02 13:42:44,922 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:42:44,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2023-12-02 13:42:45,050 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:42:45,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 55 [2023-12-02 13:42:45,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2023-12-02 13:42:45,129 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-12-02 13:42:45,129 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:42:45,176 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1810 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem216#1.base| v_ArrVal_1810) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (_ bv1 1)))) is different from false [2023-12-02 13:42:45,204 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1810 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1810) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-12-02 13:42:45,250 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1810 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1809 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem214#1.base| v_ArrVal_1809))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1810)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 13:42:47,666 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1810 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1808 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1809 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1808))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1809)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1810)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 13:42:47,709 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:42:47,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 78 [2023-12-02 13:42:47,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3087 treesize of output 2376 [2023-12-02 13:42:47,736 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 262 treesize of output 248 [2023-12-02 13:42:47,742 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 248 treesize of output 178 [2023-12-02 13:42:47,752 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 109 treesize of output 67 [2023-12-02 13:43:00,259 WARN L293 SmtUtils]: Spent 7.66s on a formula simplification that was a NOOP. DAG size: 485 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-12-02 13:43:00,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:43:00,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 196 treesize of output 1076 [2023-12-02 13:43:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 3 not checked. [2023-12-02 13:43:49,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737466924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:43:49,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:43:49,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9, 11, 9, 11] total 28 [2023-12-02 13:43:49,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529498267] [2023-12-02 13:43:49,566 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:43:49,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-02 13:43:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:43:49,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-02 13:43:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=242, Unknown=23, NotChecked=462, Total=812 [2023-12-02 13:43:49,568 INFO L87 Difference]: Start difference. First operand 710 states and 829 transitions. Second operand has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 29 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:44:07,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:44:09,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:44:11,558 WARN L539 Checker$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 13:44:13,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 13:44:15,568 WARN L539 Checker$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 13:44:17,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-12-02 13:44:19,589 WARN L539 Checker$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 13:44:21,593 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 13:44:28,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:44:28,261 INFO L93 Difference]: Finished difference Result 893 states and 1058 transitions. [2023-12-02 13:44:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:44:28,264 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 29 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2023-12-02 13:44:28,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:44:28,267 INFO L225 Difference]: With dead ends: 893 [2023-12-02 13:44:28,267 INFO L226 Difference]: Without dead ends: 893 [2023-12-02 13:44:28,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 228 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=111, Invalid=290, Unknown=23, NotChecked=506, Total=930 [2023-12-02 13:44:28,268 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 844 mSDsluCounter, 6786 mSDsCounter, 0 mSdLazyCounter, 3021 mSolverCounterSat, 17 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 7383 SdHoareTripleChecker+Invalid, 11467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3021 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 8421 IncrementalHoareTripleChecker+Unchecked, 38.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:44:28,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 7383 Invalid, 11467 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 3021 Invalid, 8 Unknown, 8421 Unchecked, 38.1s Time] [2023-12-02 13:44:28,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2023-12-02 13:44:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 709. [2023-12-02 13:44:28,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 417 states have (on average 1.8465227817745804) internal successors, (770), 671 states have internal predecessors, (770), 31 states have call successors, (31), 12 states have call predecessors, (31), 11 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-02 13:44:28,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 827 transitions. [2023-12-02 13:44:28,278 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 827 transitions. Word has length 44 [2023-12-02 13:44:28,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:44:28,278 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 827 transitions. [2023-12-02 13:44:28,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.8571428571428572) internal successors, (52), 29 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:44:28,278 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 827 transitions. [2023-12-02 13:44:28,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 13:44:28,278 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:28,279 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:44:28,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2023-12-02 13:44:28,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:44:28,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-12-02 13:44:28,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:44:28,880 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [xmalloc_fgetsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, xmalloc_fgetsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 270 more)] === [2023-12-02 13:44:28,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:44:28,880 INFO L85 PathProgramCache]: Analyzing trace with hash -863779138, now seen corresponding path program 1 times [2023-12-02 13:44:28,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:44:28,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572926946] [2023-12-02 13:44:28,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:28,882 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 13:44:28,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:44:28,882 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:44:28,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/mathsat -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 13:44:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:29,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-02 13:44:29,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:44:30,010 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 13:44:30,109 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:44:30,110 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 13:44:30,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:44:30,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-12-02 13:44:30,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-12-02 13:44:30,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2023-12-02 13:44:30,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-12-02 13:44:30,662 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:44:30,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 75 [2023-12-02 13:44:30,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2023-12-02 13:44:31,052 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:44:31,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 75 [2023-12-02 13:44:31,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2023-12-02 13:44:31,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 13 [2023-12-02 13:44:31,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2023-12-02 13:44:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-12-02 13:44:31,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:44:32,170 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_1941 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1940 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem216#1.base| v_ArrVal_1941) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) (_ bv1 64) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem216#1.base| v_ArrVal_1940) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0)))) (forall ((v_ArrVal_1941 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem216#1.base| v_ArrVal_1941) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))) (bvule (bvadd .cse2 .cse1) (bvadd .cse2 (_ bv1 64) .cse1)))))) is different from false [2023-12-02 13:44:32,295 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse1 ((_ sign_extend 32) (bvadd |c_ULTIMATE.start_main_~j~0#1| (_ bv1 32)))) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (and (forall ((v_ArrVal_1941 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1941) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 (_ bv1 64) .cse1)))) (forall ((v_ArrVal_1941 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1940 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1941) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3) (_ bv1 64) .cse1) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1940) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))))))) is different from false [2023-12-02 13:44:32,470 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse2 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_1941 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1940 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1939 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1938 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem214#1.base| v_ArrVal_1938))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv1 64) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem214#1.base| v_ArrVal_1939) .cse1 v_ArrVal_1941) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_1940) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2)))))) (forall ((v_ArrVal_1941 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1939 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1938 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem214#1.base| v_ArrVal_1939) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem214#1.base| v_ArrVal_1938) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2) v_ArrVal_1941) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2))) (bvule (bvadd .cse0 .cse4) (bvadd .cse0 (_ bv1 64) .cse4)))))) is different from false [2023-12-02 13:44:32,593 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse1 ((_ sign_extend 32) (_ bv1 32))) (.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (and (forall ((v_ArrVal_1941 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1939 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1938 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1939) (select (select (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1938) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3) v_ArrVal_1941) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((v_ArrVal_1941 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1940 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1939 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1938 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse2 v_ArrVal_1938))) (let ((.cse4 (select (select .cse5 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse2 v_ArrVal_1939) .cse4 v_ArrVal_1941) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3) .cse1 (_ bv1 64)) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1940) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse3))))))))) is different from false [2023-12-02 13:44:32,754 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ sign_extend 32) (_ bv1 32))) (.cse4 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_1941 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1939 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1936 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1938 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1937 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1936))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1937) .cse2 v_ArrVal_1939) (select (select (store .cse3 .cse2 v_ArrVal_1938) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) v_ArrVal_1941))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (bvule (bvadd .cse0 .cse1) (bvadd .cse0 .cse1 (_ bv1 64))))) (forall ((v_ArrVal_1941 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1940 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1939 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1936 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1938 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1937 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1936))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_1938))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1937) .cse5 v_ArrVal_1939) .cse6 v_ArrVal_1941) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) .cse1 (_ bv1 64)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_1940) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4)))))))))) is different from false [2023-12-02 13:44:32,861 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:44:32,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 227 treesize of output 228 [2023-12-02 13:44:32,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:44:32,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 214 treesize of output 137 [2023-12-02 13:44:32,904 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21839 treesize of output 18032 [2023-12-02 13:44:33,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13159 treesize of output 12700 [2023-12-02 13:44:33,052 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 1833 treesize of output 1686 [2023-12-02 13:44:33,070 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 1686 treesize of output 1588 [2023-12-02 13:44:33,082 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 1588 treesize of output 1210 [2023-12-02 13:44:33,095 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 1210 treesize of output 1112 [2023-12-02 13:44:33,108 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 1112 treesize of output 930 [2023-12-02 13:44:33,120 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 930 treesize of output 874 [2023-12-02 13:44:35,829 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:44:35,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 228 treesize of output 216 [2023-12-02 13:44:35,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:44:35,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 138 [2023-12-02 13:44:35,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1481 treesize of output 1238 [2023-12-02 13:44:35,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3736 treesize of output 3475 [2023-12-02 13:44:35,957 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 987 treesize of output 875 [2023-12-02 13:44:35,972 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 875 treesize of output 707 [2023-12-02 13:44:35,987 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 707 treesize of output 651 [2023-12-02 13:44:36,003 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 651 treesize of output 567 [2023-12-02 13:44:36,018 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 567 treesize of output 511 [2023-12-02 13:44:36,739 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-12-02 13:44:36,739 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 15 treesize of output 14 [2023-12-02 13:44:36,743 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 3 not checked. [2023-12-02 13:44:36,743 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:44:36,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572926946] [2023-12-02 13:44:36,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572926946] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:44:36,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1535854832] [2023-12-02 13:44:36,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:36,744 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:44:36,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:44:36,745 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:44:36,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4f53d66-a6dd-4a4c-84d2-39fe4eb8e7c1/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-02 13:44:45,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:45,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 28 conjunts are in the unsatisfiable core [2023-12-02 13:44:45,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:44:45,374 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 13:44:45,424 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 13:44:45,424 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 13:44:45,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 13:44:45,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-12-02 13:44:45,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 1 [2023-12-02 13:44:45,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 29 [2023-12-02 13:44:45,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 16 [2023-12-02 13:44:45,723 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:44:45,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 75 [2023-12-02 13:44:45,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2023-12-02 13:44:46,078 INFO L349 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2023-12-02 13:44:46,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 75 [2023-12-02 13:44:46,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 16 [2023-12-02 13:44:46,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 13 [2023-12-02 13:44:46,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2023-12-02 13:44:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-12-02 13:44:46,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:44:50,698 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse7 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse4 ((_ sign_extend 32) (_ bv1 32))) (.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse8 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (and (forall ((v_ArrVal_2069 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| .cse8 v_ArrVal_2069))) (let ((.cse1 (select (select .cse6 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (let ((.cse2 (bvadd .cse0 (_ bv1 64) .cse1))) (or (not (bvule (bvadd .cse0 .cse1) .cse2)) (forall ((v_ArrVal_2070 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (select (select (store |c_#memory_$Pointer$.base| .cse8 v_ArrVal_2070) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (or (not (bvule .cse2 (select |c_#length| .cse3))) (forall ((v_ArrVal_2072 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (select (select (store .cse6 .cse3 v_ArrVal_2072) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (bvule (bvadd .cse4 .cse5) (bvadd .cse4 (_ bv1 64) .cse5)))))))))))) (forall ((v_ArrVal_2069 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse11 (store |c_#memory_$Pointer$.offset| .cse8 v_ArrVal_2069))) (let ((.cse9 (select (select .cse11 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (let ((.cse10 (bvadd .cse0 (_ bv1 64) .cse9))) (or (not (bvule (bvadd .cse0 .cse9) .cse10)) (forall ((v_ArrVal_2070 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse13 (store |c_#memory_$Pointer$.base| .cse8 v_ArrVal_2070))) (let ((.cse12 (select (select .cse13 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (or (forall ((v_ArrVal_2072 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2071 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd .cse4 (_ bv1 64) (select (select (store .cse11 .cse12 v_ArrVal_2072) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)) (select |c_#length| (select (select (store .cse13 .cse12 v_ArrVal_2071) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)))) (not (bvule .cse10 (select |c_#length| .cse12))))))))))))))) is different from false [2023-12-02 13:44:51,047 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ sign_extend 32) (_ bv1 32))) (.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse7 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~5#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_2067 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2069 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2068 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse8 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_2067))) (let ((.cse9 (select (select .cse8 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (let ((.cse5 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_2068) .cse9 v_ArrVal_2069))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (let ((.cse2 (bvadd .cse0 (_ bv1 64) .cse1))) (or (not (bvule (bvadd .cse0 .cse1) .cse2)) (forall ((v_ArrVal_2070 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse6 (select (select (store .cse8 .cse9 v_ArrVal_2070) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (or (forall ((v_ArrVal_2072 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse3 (select (select (store .cse5 .cse6 v_ArrVal_2072) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (bvule (bvadd .cse3 .cse4) (bvadd .cse3 .cse4 (_ bv1 64))))) (not (bvule .cse2 (select |c_#length| .cse6))))))))))))) (forall ((v_ArrVal_2067 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2069 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2068 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse15 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_2067))) (let ((.cse16 (select (select .cse15 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (let ((.cse12 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_2068) .cse16 v_ArrVal_2069))) (let ((.cse10 (select (select .cse12 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (let ((.cse11 (bvadd .cse0 (_ bv1 64) .cse10))) (or (not (bvule (bvadd .cse0 .cse10) .cse11)) (forall ((v_ArrVal_2070 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse14 (store .cse15 .cse16 v_ArrVal_2070))) (let ((.cse13 (select (select .cse14 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7))) (or (forall ((v_ArrVal_2072 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_2071 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store .cse12 .cse13 v_ArrVal_2072) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7) .cse4 (_ bv1 64)) (select |c_#length| (select (select (store .cse14 .cse13 v_ArrVal_2071) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse7)))) (not (bvule .cse11 (select |c_#length| .cse13)))))))))))))))) is different from false [2023-12-02 13:44:51,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:44:51,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 461 treesize of output 422 [2023-12-02 13:44:51,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:44:51,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 409 treesize of output 266 [2023-12-02 13:44:51,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17043 treesize of output 14559 [2023-12-02 13:44:51,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5373 treesize of output 5112 [2023-12-02 13:44:51,768 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 308 treesize of output 294 [2023-12-02 13:44:51,888 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 420 treesize of output 329 [2023-12-02 13:44:51,896 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 459 treesize of output 403 [2023-12-02 13:44:51,929 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 287 treesize of output 231 [2023-12-02 13:44:51,960 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 231 treesize of output 203 [2023-12-02 13:44:52,128 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 175 treesize of output 147 [2023-12-02 13:45:02,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:45:02,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 462 treesize of output 410 [2023-12-02 13:45:02,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 13:45:02,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 397 treesize of output 267 [2023-12-02 13:45:02,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2577 treesize of output 2154 [2023-12-02 13:45:02,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4248 treesize of output 3933 [2023-12-02 13:45:03,064 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 1444 treesize of output 1318 [2023-12-02 13:45:03,237 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 875 treesize of output 707 [2023-12-02 13:45:03,275 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 1280 treesize of output 1154 [2023-12-02 13:45:03,313 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 1154 treesize of output 958 [2023-12-02 13:45:03,346 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 958 treesize of output 867 [2023-12-02 13:45:32,742 WARN L293 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 176 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)