./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:52:42,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:52:42,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:52:42,644 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:52:42,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:52:42,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:52:42,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:52:42,661 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:52:42,664 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:52:42,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:52:42,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:52:42,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:52:42,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:52:42,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:52:42,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:52:42,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:52:42,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:52:42,687 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:52:42,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:52:42,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:52:42,702 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:52:42,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:52:42,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:52:42,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:52:42,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:52:42,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:52:42,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:52:42,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:52:42,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:52:42,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:52:42,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:52:42,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:52:42,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:52:42,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:52:42,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:52:42,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:52:42,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:52:42,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:52:42,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:52:42,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:52:42,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:52:42,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 19:52:42,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:52:42,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:52:42,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:52:42,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:52:42,784 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:52:42,784 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:52:42,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:52:42,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:52:42,785 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:52:42,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:52:42,787 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:52:42,787 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:52:42,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:52:42,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:52:42,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:52:42,788 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:52:42,788 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:52:42,789 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:52:42,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:52:42,789 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:52:42,789 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:52:42,790 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:52:42,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:52:42,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:52:42,790 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:52:42,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:52:42,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:52:42,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:52:42,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:52:42,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:52:42,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 [2022-11-18 19:52:43,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:52:43,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:52:43,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:52:43,208 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:52:43,209 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:52:43,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2022-11-18 19:52:43,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/data/4562b50be/442f4df5b2324330bcf02d8fafdc9e2a/FLAG6da1a3413 [2022-11-18 19:52:43,943 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:52:43,944 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2022-11-18 19:52:43,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/data/4562b50be/442f4df5b2324330bcf02d8fafdc9e2a/FLAG6da1a3413 [2022-11-18 19:52:44,165 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/data/4562b50be/442f4df5b2324330bcf02d8fafdc9e2a [2022-11-18 19:52:44,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:52:44,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:52:44,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:52:44,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:52:44,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:52:44,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:52:44" (1/1) ... [2022-11-18 19:52:44,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@620a3e23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:44, skipping insertion in model container [2022-11-18 19:52:44,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:52:44" (1/1) ... [2022-11-18 19:52:44,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:52:44,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:52:44,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:52:44,927 ERROR L326 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) [2022-11-18 19:52:44,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6e201251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:44, skipping insertion in model container [2022-11-18 19:52:44,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:52:44,930 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 19:52:44,934 INFO L158 Benchmark]: Toolchain (without parser) took 756.63ms. Allocated memory is still 132.1MB. Free memory was 91.7MB in the beginning and 101.8MB in the end (delta: -10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:52:44,936 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 132.1MB. Free memory was 109.8MB in the beginning and 109.7MB in the end (delta: 125.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:52:44,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 750.44ms. Allocated memory is still 132.1MB. Free memory was 91.5MB in the beginning and 101.8MB in the end (delta: -10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:52:44,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 132.1MB. Free memory was 109.8MB in the beginning and 109.7MB in the end (delta: 125.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 750.44ms. Allocated memory is still 132.1MB. Free memory was 91.5MB in the beginning and 101.8MB in the end (delta: -10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:52:47,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:52:47,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:52:47,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:52:47,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:52:47,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:52:47,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:52:47,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:52:47,465 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:52:47,467 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:52:47,468 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:52:47,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:52:47,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:52:47,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:52:47,473 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:52:47,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:52:47,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:52:47,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:52:47,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:52:47,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:52:47,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:52:47,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:52:47,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:52:47,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:52:47,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:52:47,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:52:47,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:52:47,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:52:47,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:52:47,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:52:47,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:52:47,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:52:47,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:52:47,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:52:47,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:52:47,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:52:47,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:52:47,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:52:47,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:52:47,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:52:47,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:52:47,507 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 19:52:47,551 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:52:47,551 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:52:47,552 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:52:47,552 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:52:47,553 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:52:47,553 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:52:47,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:52:47,555 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:52:47,555 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:52:47,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:52:47,556 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:52:47,556 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:52:47,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:52:47,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:52:47,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:52:47,557 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:52:47,558 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:52:47,558 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:52:47,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:52:47,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:52:47,559 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 19:52:47,559 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 19:52:47,559 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:52:47,560 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:52:47,560 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:52:47,560 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:52:47,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:52:47,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:52:47,561 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:52:47,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:52:47,562 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 19:52:47,562 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 19:52:47,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 19:52:47,563 INFO L138 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_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fd80c822f4c545ea9a48882a667e8fa2630e37e10bf15ea7aea35e48f16af74 [2022-11-18 19:52:48,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:52:48,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:52:48,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:52:48,050 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:52:48,052 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:52:48,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2022-11-18 19:52:48,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/data/386290eae/48e05c835c5f4a00b7bc862a0779d6f5/FLAG2df218290 [2022-11-18 19:52:48,861 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:52:48,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/sv-benchmarks/c/ldv-memsafety/memleaks_test10-2.i [2022-11-18 19:52:48,894 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/data/386290eae/48e05c835c5f4a00b7bc862a0779d6f5/FLAG2df218290 [2022-11-18 19:52:49,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/data/386290eae/48e05c835c5f4a00b7bc862a0779d6f5 [2022-11-18 19:52:49,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:52:49,054 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:52:49,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:52:49,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:52:49,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:52:49,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:52:49" (1/1) ... [2022-11-18 19:52:49,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2390e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49, skipping insertion in model container [2022-11-18 19:52:49,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:52:49" (1/1) ... [2022-11-18 19:52:49,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:52:49,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:52:49,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:52:49,782 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 19:52:49,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:52:49,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:52:49,878 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:52:49,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:52:49,973 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:52:49,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49 WrapperNode [2022-11-18 19:52:49,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:52:49,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:52:49,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:52:49,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:52:49,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49" (1/1) ... [2022-11-18 19:52:50,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49" (1/1) ... [2022-11-18 19:52:50,035 INFO L138 Inliner]: procedures = 167, calls = 92, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 78 [2022-11-18 19:52:50,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:52:50,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:52:50,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:52:50,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:52:50,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49" (1/1) ... [2022-11-18 19:52:50,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49" (1/1) ... [2022-11-18 19:52:50,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49" (1/1) ... [2022-11-18 19:52:50,052 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49" (1/1) ... [2022-11-18 19:52:50,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49" (1/1) ... [2022-11-18 19:52:50,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49" (1/1) ... [2022-11-18 19:52:50,083 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49" (1/1) ... [2022-11-18 19:52:50,084 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49" (1/1) ... [2022-11-18 19:52:50,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:52:50,088 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:52:50,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:52:50,089 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:52:50,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49" (1/1) ... [2022-11-18 19:52:50,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:52:50,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:52:50,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:52:50,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:52:50,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 19:52:50,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 19:52:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:52:50,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:52:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:52:50,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:52:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:52:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 19:52:50,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:52:50,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:52:50,404 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:52:50,406 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:52:51,020 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:52:51,028 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:52:51,028 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:52:51,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:52:51 BoogieIcfgContainer [2022-11-18 19:52:51,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:52:51,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:52:51,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:52:51,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:52:51,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:52:49" (1/3) ... [2022-11-18 19:52:51,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9d2088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:52:51, skipping insertion in model container [2022-11-18 19:52:51,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:52:49" (2/3) ... [2022-11-18 19:52:51,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a9d2088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:52:51, skipping insertion in model container [2022-11-18 19:52:51,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:52:51" (3/3) ... [2022-11-18 19:52:51,048 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test10-2.i [2022-11-18 19:52:51,065 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:52:51,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2022-11-18 19:52:51,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:52:51,124 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;@63d3db3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:52:51,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2022-11-18 19:52:51,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 87 states have internal predecessors, (91), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:52:51,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:52:51,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:51,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:51,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:52:51,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1192529059, now seen corresponding path program 1 times [2022-11-18 19:52:51,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:52:51,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817647007] [2022-11-18 19:52:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:51,162 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 [2022-11-18 19:52:51,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:52:51,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:52:51,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:52:51,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:51,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:52:51,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:51,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:51,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:52:51,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:52:51,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817647007] [2022-11-18 19:52:51,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817647007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:51,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:51,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:52:51,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367473181] [2022-11-18 19:52:51,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:51,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:52:51,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:52:51,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:52:51,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:52:51,505 INFO L87 Difference]: Start difference. First operand has 93 states, 44 states have (on average 2.0681818181818183) internal successors, (91), 87 states have internal predecessors, (91), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:52:51,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:51,854 INFO L93 Difference]: Finished difference Result 180 states and 197 transitions. [2022-11-18 19:52:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:52:51,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-18 19:52:51,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:51,873 INFO L225 Difference]: With dead ends: 180 [2022-11-18 19:52:51,873 INFO L226 Difference]: Without dead ends: 176 [2022-11-18 19:52:51,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:52:51,879 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 83 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:51,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 485 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:52:51,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-18 19:52:51,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 95. [2022-11-18 19:52:51,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 46 states have (on average 2.0) internal successors, (92), 88 states have internal predecessors, (92), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:52:51,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2022-11-18 19:52:51,940 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 11 [2022-11-18 19:52:51,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:51,941 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2022-11-18 19:52:51,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:52:51,941 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2022-11-18 19:52:51,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:52:51,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:51,943 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:51,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-18 19:52:52,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:52:52,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:52:52,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:52,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2080032740, now seen corresponding path program 1 times [2022-11-18 19:52:52,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:52:52,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003609835] [2022-11-18 19:52:52,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:52,162 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 [2022-11-18 19:52:52,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:52:52,165 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:52:52,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:52:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:52,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:52:52,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:52,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:52,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:52:52,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:52:52,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003609835] [2022-11-18 19:52:52,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003609835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:52:52,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:52:52,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:52:52,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29954461] [2022-11-18 19:52:52,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:52:52,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:52:52,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:52:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:52:52,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:52:52,294 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:52:52,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:52,761 INFO L93 Difference]: Finished difference Result 163 states and 179 transitions. [2022-11-18 19:52:52,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:52:52,762 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-18 19:52:52,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:52,764 INFO L225 Difference]: With dead ends: 163 [2022-11-18 19:52:52,764 INFO L226 Difference]: Without dead ends: 161 [2022-11-18 19:52:52,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:52:52,766 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 63 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:52,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 281 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:52:52,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-11-18 19:52:52,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 91. [2022-11-18 19:52:52,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 43 states have (on average 2.046511627906977) internal successors, (88), 85 states have internal predecessors, (88), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:52:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 96 transitions. [2022-11-18 19:52:52,793 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 96 transitions. Word has length 11 [2022-11-18 19:52:52,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:52,803 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 96 transitions. [2022-11-18 19:52:52,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 19:52:52,803 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 96 transitions. [2022-11-18 19:52:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:52:52,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:52,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:52,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:53,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:52:53,020 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:52:53,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:53,021 INFO L85 PathProgramCache]: Analyzing trace with hash -895923568, now seen corresponding path program 1 times [2022-11-18 19:52:53,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:52:53,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867631985] [2022-11-18 19:52:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:53,022 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 [2022-11-18 19:52:53,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:52:53,024 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:52:53,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:52:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:53,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:52:53,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:53,171 INFO L350 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 [2022-11-18 19:52:53,265 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-18 19:52:53,326 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:52:53,326 INFO L350 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 [2022-11-18 19:52:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-18 19:52:53,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:53,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:52:53,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:52:53,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867631985] [2022-11-18 19:52:53,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867631985] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:52:53,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:52:53,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2022-11-18 19:52:53,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966748243] [2022-11-18 19:52:53,656 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:52:53,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:52:53,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:52:53,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:52:53,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2022-11-18 19:52:53,658 INFO L87 Difference]: Start difference. First operand 91 states and 96 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:52:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:52:54,277 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2022-11-18 19:52:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:52:54,278 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), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 15 [2022-11-18 19:52:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:52:54,279 INFO L225 Difference]: With dead ends: 129 [2022-11-18 19:52:54,279 INFO L226 Difference]: Without dead ends: 129 [2022-11-18 19:52:54,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2022-11-18 19:52:54,281 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 65 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:52:54,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 288 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 297 Invalid, 0 Unknown, 200 Unchecked, 0.5s Time] [2022-11-18 19:52:54,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-18 19:52:54,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 102. [2022-11-18 19:52:54,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 54 states have (on average 1.9259259259259258) internal successors, (104), 93 states have internal predecessors, (104), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-18 19:52:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 119 transitions. [2022-11-18 19:52:54,311 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 119 transitions. Word has length 15 [2022-11-18 19:52:54,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:52:54,312 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 119 transitions. [2022-11-18 19:52:54,312 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), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:52:54,313 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 119 transitions. [2022-11-18 19:52:54,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:52:54,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:52:54,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:52:54,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:52:54,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:52:54,537 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:52:54,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:52:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash -895923567, now seen corresponding path program 1 times [2022-11-18 19:52:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:52:54,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [128895833] [2022-11-18 19:52:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:54,539 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 [2022-11-18 19:52:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:52:54,542 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:52:54,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:52:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:54,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:52:54,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:54,676 INFO L350 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 [2022-11-18 19:52:54,843 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| |c_ldv_malloc_#in~size|) |c_#length|)) is different from true [2022-11-18 19:52:54,891 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:52:54,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:52:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-18 19:52:54,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:55,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:52:55,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [128895833] [2022-11-18 19:52:55,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [128895833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:52:55,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [938791790] [2022-11-18 19:52:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:52:55,199 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:52:55,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:52:55,203 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:52:55,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-18 19:52:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:52:55,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:52:55,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:52:55,405 INFO L350 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 [2022-11-18 19:52:55,413 INFO L350 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 [2022-11-18 19:52:55,657 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_24 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_24) |c_#length|)))) is different from true [2022-11-18 19:52:55,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:52:55,692 INFO L350 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 12 treesize of output 14 [2022-11-18 19:52:55,709 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:52:55,710 INFO L350 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 [2022-11-18 19:52:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-18 19:52:55,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:00,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [938791790] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:00,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:00,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-11-18 19:53:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25687946] [2022-11-18 19:53:00,062 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:00,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:53:00,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:00,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:53:00,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=171, Unknown=4, NotChecked=54, Total=272 [2022-11-18 19:53:00,064 INFO L87 Difference]: Start difference. First operand 102 states and 119 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:53:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:01,495 INFO L93 Difference]: Finished difference Result 177 states and 198 transitions. [2022-11-18 19:53:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:53:01,497 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 15 [2022-11-18 19:53:01,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:01,498 INFO L225 Difference]: With dead ends: 177 [2022-11-18 19:53:01,499 INFO L226 Difference]: Without dead ends: 177 [2022-11-18 19:53:01,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=54, Invalid=222, Unknown=4, NotChecked=62, Total=342 [2022-11-18 19:53:01,501 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 140 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:01,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 461 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 567 Invalid, 0 Unknown, 231 Unchecked, 1.3s Time] [2022-11-18 19:53:01,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-18 19:53:01,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 137. [2022-11-18 19:53:01,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 87 states have (on average 1.9195402298850575) internal successors, (167), 126 states have internal predecessors, (167), 7 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (14), 9 states have call predecessors, (14), 7 states have call successors, (14) [2022-11-18 19:53:01,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 188 transitions. [2022-11-18 19:53:01,517 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 188 transitions. Word has length 15 [2022-11-18 19:53:01,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:01,517 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 188 transitions. [2022-11-18 19:53:01,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-18 19:53:01,518 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 188 transitions. [2022-11-18 19:53:01,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:53:01,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:01,519 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:01,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:01,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2022-11-18 19:53:01,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 19:53:01,933 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:01,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:01,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1602092369, now seen corresponding path program 1 times [2022-11-18 19:53:01,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:01,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459600875] [2022-11-18 19:53:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:01,935 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 [2022-11-18 19:53:01,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:01,937 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:01,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 19:53:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:02,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:53:02,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:02,107 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:02,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:02,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:02,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459600875] [2022-11-18 19:53:02,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459600875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:02,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:02,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:53:02,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988141170] [2022-11-18 19:53:02,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:02,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:53:02,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:02,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:53:02,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:53:02,114 INFO L87 Difference]: Start difference. First operand 137 states and 188 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:53:02,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:02,215 INFO L93 Difference]: Finished difference Result 122 states and 163 transitions. [2022-11-18 19:53:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:02,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2022-11-18 19:53:02,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:02,217 INFO L225 Difference]: With dead ends: 122 [2022-11-18 19:53:02,217 INFO L226 Difference]: Without dead ends: 120 [2022-11-18 19:53:02,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:53:02,218 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:02,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 347 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:53:02,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-18 19:53:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2022-11-18 19:53:02,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 76 states have (on average 1.9342105263157894) internal successors, (147), 112 states have internal predecessors, (147), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-18 19:53:02,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 161 transitions. [2022-11-18 19:53:02,239 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 161 transitions. Word has length 15 [2022-11-18 19:53:02,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:02,239 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 161 transitions. [2022-11-18 19:53:02,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 19:53:02,240 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 161 transitions. [2022-11-18 19:53:02,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 19:53:02,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:02,241 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:02,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:02,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:02,455 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:02,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:02,455 INFO L85 PathProgramCache]: Analyzing trace with hash 684574475, now seen corresponding path program 1 times [2022-11-18 19:53:02,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:02,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801631477] [2022-11-18 19:53:02,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:02,456 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 [2022-11-18 19:53:02,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:02,458 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:02,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:02,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:53:02,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:02,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:02,604 INFO L350 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 16 treesize of output 8 [2022-11-18 19:53:02,620 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:53:02,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:02,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:02,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801631477] [2022-11-18 19:53:02,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801631477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:02,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:02,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:53:02,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108976077] [2022-11-18 19:53:02,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:02,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:02,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:02,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:53:02,624 INFO L87 Difference]: Start difference. First operand 120 states and 161 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:53:02,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:02,891 INFO L93 Difference]: Finished difference Result 130 states and 175 transitions. [2022-11-18 19:53:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:53:02,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2022-11-18 19:53:02,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:02,893 INFO L225 Difference]: With dead ends: 130 [2022-11-18 19:53:02,893 INFO L226 Difference]: Without dead ends: 130 [2022-11-18 19:53:02,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:53:02,894 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 6 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:02,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 401 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:53:02,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-18 19:53:02,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2022-11-18 19:53:02,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 80 states have (on average 1.8875) internal successors, (151), 115 states have internal predecessors, (151), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-18 19:53:02,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2022-11-18 19:53:02,904 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 20 [2022-11-18 19:53:02,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:02,904 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2022-11-18 19:53:02,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 19:53:02,905 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2022-11-18 19:53:02,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 19:53:02,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:02,906 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:02,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:03,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:03,124 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:03,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1122879988, now seen corresponding path program 1 times [2022-11-18 19:53:03,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:03,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [101882671] [2022-11-18 19:53:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:03,126 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 [2022-11-18 19:53:03,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:03,127 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:03,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 19:53:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:03,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:53:03,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:03,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:03,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:53:03,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:03,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [101882671] [2022-11-18 19:53:03,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [101882671] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:03,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:03,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-11-18 19:53:03,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053733808] [2022-11-18 19:53:03,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:03,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:53:03,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:03,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:53:03,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:53:03,701 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:53:04,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:04,153 INFO L93 Difference]: Finished difference Result 127 states and 167 transitions. [2022-11-18 19:53:04,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:53:04,154 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 20 [2022-11-18 19:53:04,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:04,155 INFO L225 Difference]: With dead ends: 127 [2022-11-18 19:53:04,155 INFO L226 Difference]: Without dead ends: 127 [2022-11-18 19:53:04,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:53:04,157 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 154 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:04,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 294 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 179 Invalid, 0 Unknown, 9 Unchecked, 0.4s Time] [2022-11-18 19:53:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-18 19:53:04,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-11-18 19:53:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 83 states have (on average 1.8433734939759037) internal successors, (153), 117 states have internal predecessors, (153), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-18 19:53:04,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 167 transitions. [2022-11-18 19:53:04,181 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 167 transitions. Word has length 20 [2022-11-18 19:53:04,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:04,181 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 167 transitions. [2022-11-18 19:53:04,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:53:04,182 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 167 transitions. [2022-11-18 19:53:04,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:53:04,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:04,183 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:04,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:04,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:04,396 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:04,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:04,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1782681151, now seen corresponding path program 1 times [2022-11-18 19:53:04,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:04,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646546021] [2022-11-18 19:53:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:04,397 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 [2022-11-18 19:53:04,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:04,400 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:04,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 19:53:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:04,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:53:04,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:04,703 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~a10~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base|) (_ bv0 1)))) is different from true [2022-11-18 19:53:04,713 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:53:04,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:04,897 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret44#1.base_18| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_old_#valid#1| (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret44#1.base_18| (_ bv0 1))) (not (= (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret44#1.base_18|) (_ bv0 1))))) is different from false [2022-11-18 19:53:04,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:04,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646546021] [2022-11-18 19:53:04,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646546021] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:04,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [312595570] [2022-11-18 19:53:04,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:04,900 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:53:04,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:53:04,901 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:53:04,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-18 19:53:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:05,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:53:05,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:53:05,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:05,602 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret44#1.base_21| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_old_#valid#1| (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret44#1.base_21| (_ bv0 1))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret44#1.base_21|))))) is different from false [2022-11-18 19:53:05,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [312595570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:05,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:05,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-11-18 19:53:05,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476946152] [2022-11-18 19:53:05,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:05,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:53:05,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:05,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:53:05,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=126, Unknown=3, NotChecked=72, Total=240 [2022-11-18 19:53:05,606 INFO L87 Difference]: Start difference. First operand 127 states and 167 transitions. Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:53:05,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:05,927 INFO L93 Difference]: Finished difference Result 136 states and 174 transitions. [2022-11-18 19:53:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:53:05,928 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2022-11-18 19:53:05,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:05,929 INFO L225 Difference]: With dead ends: 136 [2022-11-18 19:53:05,929 INFO L226 Difference]: Without dead ends: 129 [2022-11-18 19:53:05,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 60 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=172, Unknown=3, NotChecked=84, Total=306 [2022-11-18 19:53:05,930 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 9 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 297 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:05,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 377 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 297 Unchecked, 0.2s Time] [2022-11-18 19:53:05,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-18 19:53:05,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 124. [2022-11-18 19:53:05,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 79 states have (on average 1.8734177215189873) internal successors, (148), 114 states have internal predecessors, (148), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-18 19:53:05,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 162 transitions. [2022-11-18 19:53:05,951 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 162 transitions. Word has length 23 [2022-11-18 19:53:05,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:05,952 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 162 transitions. [2022-11-18 19:53:05,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:53:05,952 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 162 transitions. [2022-11-18 19:53:05,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:53:05,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:05,953 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:05,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:06,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:06,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:06,358 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:06,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:06,359 INFO L85 PathProgramCache]: Analyzing trace with hash -931351798, now seen corresponding path program 1 times [2022-11-18 19:53:06,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:06,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361554392] [2022-11-18 19:53:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:06,359 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 [2022-11-18 19:53:06,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:06,361 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:06,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:06,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:06,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:53:06,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:06,480 INFO L350 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 [2022-11-18 19:53:06,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:06,559 INFO L350 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 19 treesize of output 11 [2022-11-18 19:53:06,607 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-18 19:53:06,637 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:53:06,637 INFO L350 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 [2022-11-18 19:53:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2022-11-18 19:53:06,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:53:06,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:06,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361554392] [2022-11-18 19:53:06,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361554392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:06,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:06,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2022-11-18 19:53:06,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654465188] [2022-11-18 19:53:06,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:06,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:53:06,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:06,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:53:06,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2022-11-18 19:53:06,910 INFO L87 Difference]: Start difference. First operand 124 states and 162 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 19:53:07,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:07,435 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2022-11-18 19:53:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:53:07,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2022-11-18 19:53:07,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:07,437 INFO L225 Difference]: With dead ends: 140 [2022-11-18 19:53:07,438 INFO L226 Difference]: Without dead ends: 140 [2022-11-18 19:53:07,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=85, Unknown=1, NotChecked=18, Total=132 [2022-11-18 19:53:07,439 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 8 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:07,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 309 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 152 Unchecked, 0.4s Time] [2022-11-18 19:53:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-18 19:53:07,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2022-11-18 19:53:07,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 90 states have (on average 1.8) internal successors, (162), 124 states have internal predecessors, (162), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-18 19:53:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 179 transitions. [2022-11-18 19:53:07,448 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 179 transitions. Word has length 25 [2022-11-18 19:53:07,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:07,448 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 179 transitions. [2022-11-18 19:53:07,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 2 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 19:53:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 179 transitions. [2022-11-18 19:53:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:53:07,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:07,450 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:07,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:07,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:07,664 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:07,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:07,664 INFO L85 PathProgramCache]: Analyzing trace with hash -931351797, now seen corresponding path program 1 times [2022-11-18 19:53:07,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:07,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517562247] [2022-11-18 19:53:07,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:07,665 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 [2022-11-18 19:53:07,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:07,666 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:07,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 19:53:07,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:07,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:53:07,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:07,810 INFO L350 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 [2022-11-18 19:53:07,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:07,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:07,948 INFO L350 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 17 treesize of output 9 [2022-11-18 19:53:07,952 INFO L350 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 15 treesize of output 7 [2022-11-18 19:53:08,051 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| |c_ldv_malloc_#in~size|) |c_#length|)) is different from true [2022-11-18 19:53:08,089 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:53:08,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:53:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-11-18 19:53:08,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:08,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:08,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517562247] [2022-11-18 19:53:08,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517562247] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:08,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1241308534] [2022-11-18 19:53:08,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:08,456 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:53:08,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:53:08,457 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:53:08,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-18 19:53:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:08,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:53:08,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:08,669 INFO L350 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 [2022-11-18 19:53:08,679 INFO L350 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 [2022-11-18 19:53:08,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:08,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:08,953 INFO L350 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 28 treesize of output 16 [2022-11-18 19:53:08,973 INFO L350 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 15 treesize of output 7 [2022-11-18 19:53:09,089 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_133 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_133))))) is different from true [2022-11-18 19:53:09,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:09,119 INFO L350 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 12 treesize of output 14 [2022-11-18 19:53:09,134 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:53:09,134 INFO L350 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 [2022-11-18 19:53:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2022-11-18 19:53:09,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:11,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1241308534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:11,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:11,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-11-18 19:53:11,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184745944] [2022-11-18 19:53:11,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:11,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:53:11,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:11,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:53:11,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=230, Unknown=2, NotChecked=62, Total=342 [2022-11-18 19:53:11,468 INFO L87 Difference]: Start difference. First operand 138 states and 179 transitions. Second operand has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 19:53:12,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:12,805 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2022-11-18 19:53:12,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:53:12,806 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 25 [2022-11-18 19:53:12,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:12,807 INFO L225 Difference]: With dead ends: 140 [2022-11-18 19:53:12,807 INFO L226 Difference]: Without dead ends: 140 [2022-11-18 19:53:12,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=74, Invalid=352, Unknown=2, NotChecked=78, Total=506 [2022-11-18 19:53:12,809 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 10 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:12,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 558 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 490 Invalid, 0 Unknown, 183 Unchecked, 1.1s Time] [2022-11-18 19:53:12,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-18 19:53:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2022-11-18 19:53:12,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 90 states have (on average 1.7777777777777777) internal successors, (160), 124 states have internal predecessors, (160), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (11), 9 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-18 19:53:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 177 transitions. [2022-11-18 19:53:12,816 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 177 transitions. Word has length 25 [2022-11-18 19:53:12,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:12,816 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 177 transitions. [2022-11-18 19:53:12,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 13 states have internal predecessors, (29), 3 states have call successors, (4), 3 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 19:53:12,816 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 177 transitions. [2022-11-18 19:53:12,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:53:12,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:12,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:12,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:13,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:13,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 19:53:13,218 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:13,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:13,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1436910423, now seen corresponding path program 1 times [2022-11-18 19:53:13,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:13,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023498752] [2022-11-18 19:53:13,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:13,220 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 [2022-11-18 19:53:13,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:13,221 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:13,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:13,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:13,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:53:13,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:13,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:13,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:13,428 INFO L350 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 15 treesize of output 7 [2022-11-18 19:53:13,433 INFO L350 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 15 treesize of output 7 [2022-11-18 19:53:13,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:53:13,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:13,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:13,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023498752] [2022-11-18 19:53:13,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023498752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:13,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:13,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:53:13,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292687318] [2022-11-18 19:53:13,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:13,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:13,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:13,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:13,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:53:13,459 INFO L87 Difference]: Start difference. First operand 138 states and 177 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:53:13,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:13,673 INFO L93 Difference]: Finished difference Result 132 states and 166 transitions. [2022-11-18 19:53:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:53:13,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-11-18 19:53:13,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:13,675 INFO L225 Difference]: With dead ends: 132 [2022-11-18 19:53:13,675 INFO L226 Difference]: Without dead ends: 126 [2022-11-18 19:53:13,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:53:13,677 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 2 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:13,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 403 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:53:13,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-18 19:53:13,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-11-18 19:53:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 82 states have (on average 1.7926829268292683) internal successors, (147), 115 states have internal predecessors, (147), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-18 19:53:13,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 160 transitions. [2022-11-18 19:53:13,683 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 160 transitions. Word has length 25 [2022-11-18 19:53:13,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:13,683 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 160 transitions. [2022-11-18 19:53:13,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:53:13,684 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 160 transitions. [2022-11-18 19:53:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 19:53:13,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:13,685 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:13,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:13,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:13,899 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:13,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:13,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1675880117, now seen corresponding path program 1 times [2022-11-18 19:53:13,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:13,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407119608] [2022-11-18 19:53:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:13,900 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 [2022-11-18 19:53:13,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:13,901 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:13,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:14,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:53:14,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:14,041 INFO L350 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 [2022-11-18 19:53:14,088 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-18 19:53:14,113 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:53:14,114 INFO L350 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 [2022-11-18 19:53:14,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:53:14,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:14,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:14,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407119608] [2022-11-18 19:53:14,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407119608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:14,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:14,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:53:14,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640478897] [2022-11-18 19:53:14,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:14,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:53:14,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:14,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:53:14,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-18 19:53:14,135 INFO L87 Difference]: Start difference. First operand 126 states and 160 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:53:14,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:14,391 INFO L93 Difference]: Finished difference Result 146 states and 179 transitions. [2022-11-18 19:53:14,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:53:14,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-11-18 19:53:14,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:14,393 INFO L225 Difference]: With dead ends: 146 [2022-11-18 19:53:14,393 INFO L226 Difference]: Without dead ends: 146 [2022-11-18 19:53:14,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-18 19:53:14,394 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 49 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:14,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 103 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 105 Invalid, 0 Unknown, 114 Unchecked, 0.2s Time] [2022-11-18 19:53:14,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-18 19:53:14,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 125. [2022-11-18 19:53:14,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 82 states have (on average 1.7804878048780488) internal successors, (146), 114 states have internal predecessors, (146), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-18 19:53:14,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 159 transitions. [2022-11-18 19:53:14,405 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 159 transitions. Word has length 27 [2022-11-18 19:53:14,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:14,406 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 159 transitions. [2022-11-18 19:53:14,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 19:53:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 159 transitions. [2022-11-18 19:53:14,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 19:53:14,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:14,414 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:14,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:14,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:14,615 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:14,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:14,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1675880116, now seen corresponding path program 1 times [2022-11-18 19:53:14,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:14,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651685369] [2022-11-18 19:53:14,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:14,616 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 [2022-11-18 19:53:14,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:14,618 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:14,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:14,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:14,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:53:14,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:14,766 INFO L350 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 [2022-11-18 19:53:14,774 INFO L350 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 [2022-11-18 19:53:14,944 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_191 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_191) |c_#length|)))) is different from true [2022-11-18 19:53:14,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:14,970 INFO L350 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 12 treesize of output 14 [2022-11-18 19:53:14,984 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:53:14,984 INFO L350 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 [2022-11-18 19:53:15,116 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_192 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_192) |c_#length|)))) is different from true [2022-11-18 19:53:15,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:15,145 INFO L350 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 12 treesize of output 14 [2022-11-18 19:53:15,164 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:53:15,165 INFO L350 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 [2022-11-18 19:53:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2022-11-18 19:53:15,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:17,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:17,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651685369] [2022-11-18 19:53:17,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651685369] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:17,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [735894496] [2022-11-18 19:53:17,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:17,508 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:53:17,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:53:17,515 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:53:17,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-18 19:53:17,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:17,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 19:53:17,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:17,745 INFO L350 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 [2022-11-18 19:53:17,755 INFO L350 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 [2022-11-18 19:53:17,917 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:53:17,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-18 19:53:17,943 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:53:17,943 INFO L350 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 [2022-11-18 19:53:18,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:18,112 INFO L350 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 8 treesize of output 4 [2022-11-18 19:53:18,168 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_219 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_219) |c_#length|)))) is different from true [2022-11-18 19:53:18,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:53:18,196 INFO L350 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 12 treesize of output 14 [2022-11-18 19:53:18,220 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:53:18,220 INFO L350 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 [2022-11-18 19:53:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 4 not checked. [2022-11-18 19:53:18,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:20,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [735894496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:20,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:20,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 13 [2022-11-18 19:53:20,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020554916] [2022-11-18 19:53:20,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:20,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:53:20,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:20,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:53:20,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=125, Unknown=4, NotChecked=72, Total=240 [2022-11-18 19:53:20,490 INFO L87 Difference]: Start difference. First operand 125 states and 159 transitions. Second operand has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:53:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:21,507 INFO L93 Difference]: Finished difference Result 171 states and 203 transitions. [2022-11-18 19:53:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:53:21,508 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 27 [2022-11-18 19:53:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:21,509 INFO L225 Difference]: With dead ends: 171 [2022-11-18 19:53:21,509 INFO L226 Difference]: Without dead ends: 171 [2022-11-18 19:53:21,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=56, Invalid=192, Unknown=4, NotChecked=90, Total=342 [2022-11-18 19:53:21,510 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 119 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 346 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:21,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 234 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 424 Invalid, 0 Unknown, 346 Unchecked, 0.8s Time] [2022-11-18 19:53:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-18 19:53:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 113. [2022-11-18 19:53:21,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 73 states have (on average 1.7534246575342465) internal successors, (128), 103 states have internal predecessors, (128), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 19:53:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 137 transitions. [2022-11-18 19:53:21,516 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 137 transitions. Word has length 27 [2022-11-18 19:53:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:21,517 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 137 transitions. [2022-11-18 19:53:21,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 19:53:21,517 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 137 transitions. [2022-11-18 19:53:21,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 19:53:21,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:21,518 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:21,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2022-11-18 19:53:21,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:21,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:21,922 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:21,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:21,922 INFO L85 PathProgramCache]: Analyzing trace with hash -412676065, now seen corresponding path program 1 times [2022-11-18 19:53:21,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:21,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012931945] [2022-11-18 19:53:21,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:21,923 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 [2022-11-18 19:53:21,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:21,924 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:21,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:22,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 19:53:22,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:22,129 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:22,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:22,195 INFO L350 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 15 treesize of output 7 [2022-11-18 19:53:22,237 INFO L350 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 [2022-11-18 19:53:22,379 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 19:53:22,379 INFO L350 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 31 treesize of output 29 [2022-11-18 19:53:22,517 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:53:22,517 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 46 [2022-11-18 19:53:22,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 19:53:22,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:22,718 INFO L321 Elim1Store]: treesize reduction 7, result has 68.2 percent of original size [2022-11-18 19:53:22,718 INFO L350 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 69 treesize of output 68 [2022-11-18 19:53:22,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:22,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012931945] [2022-11-18 19:53:22,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012931945] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:22,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1832139627] [2022-11-18 19:53:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:22,792 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:53:22,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:53:22,793 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:53:22,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-18 19:53:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:23,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:53:23,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:23,031 INFO L350 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 [2022-11-18 19:53:23,209 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:53:23,210 INFO L350 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 [2022-11-18 19:53:23,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:25,391 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_18| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_9| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_18| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_9|)))) is different from true [2022-11-18 19:53:25,522 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:53:25,522 INFO L350 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 30 treesize of output 31 [2022-11-18 19:53:25,627 INFO L350 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 15 [2022-11-18 19:53:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-18 19:53:25,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:25,665 INFO L321 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2022-11-18 19:53:25,665 INFO L350 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 23 treesize of output 22 [2022-11-18 19:53:25,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1832139627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:25,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:25,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2022-11-18 19:53:25,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317576890] [2022-11-18 19:53:25,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:25,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:53:25,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:25,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:53:25,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=481, Unknown=10, NotChecked=44, Total=600 [2022-11-18 19:53:25,774 INFO L87 Difference]: Start difference. First operand 113 states and 137 transitions. Second operand has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:53:38,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:38,601 INFO L93 Difference]: Finished difference Result 170 states and 184 transitions. [2022-11-18 19:53:38,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:53:38,601 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 28 [2022-11-18 19:53:38,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:38,603 INFO L225 Difference]: With dead ends: 170 [2022-11-18 19:53:38,603 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 19:53:38,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=257, Invalid=1626, Unknown=13, NotChecked=84, Total=1980 [2022-11-18 19:53:38,605 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 239 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 1042 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:38,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 699 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1042 Invalid, 0 Unknown, 150 Unchecked, 1.6s Time] [2022-11-18 19:53:38,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 19:53:38,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 107. [2022-11-18 19:53:38,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 69 states have (on average 1.7246376811594204) internal successors, (119), 97 states have internal predecessors, (119), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 19:53:38,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 128 transitions. [2022-11-18 19:53:38,610 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 128 transitions. Word has length 28 [2022-11-18 19:53:38,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:38,611 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 128 transitions. [2022-11-18 19:53:38,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 16 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:53:38,611 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 128 transitions. [2022-11-18 19:53:38,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 19:53:38,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:38,612 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:38,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:38,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:39,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 19:53:39,025 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:39,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:39,026 INFO L85 PathProgramCache]: Analyzing trace with hash -412676064, now seen corresponding path program 1 times [2022-11-18 19:53:39,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:39,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546369755] [2022-11-18 19:53:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:39,027 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 [2022-11-18 19:53:39,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:39,028 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:39,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:39,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:53:39,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:39,153 INFO L350 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 [2022-11-18 19:53:39,255 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:53:39,256 INFO L350 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 [2022-11-18 19:53:39,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:39,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:39,616 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:53:39,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2022-11-18 19:53:39,626 INFO L350 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 33 treesize of output 33 [2022-11-18 19:53:39,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-18 19:53:39,710 INFO L350 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 26 treesize of output 14 [2022-11-18 19:53:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:39,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:40,032 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:53:40,032 INFO L350 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 50 treesize of output 54 [2022-11-18 19:53:40,115 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_295 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_295) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse1 (bvadd .cse1 (_ bv4 32))))))) (and (or (forall ((v_ArrVal_294 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_294) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) |c_ULTIMATE.start_entry_point_#t~mem47#1.base|)) (and .cse0 (forall ((v_prenex_5 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_prenex_5) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))))) .cse0 (forall ((v_prenex_5 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_prenex_5) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset|))))) is different from false [2022-11-18 19:53:40,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:40,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546369755] [2022-11-18 19:53:40,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546369755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:40,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1619059737] [2022-11-18 19:53:40,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:40,165 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:53:40,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:53:40,167 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:53:40,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-18 19:53:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:40,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:53:40,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:40,377 INFO L350 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 [2022-11-18 19:53:40,433 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:53:40,433 INFO L350 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 [2022-11-18 19:53:40,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:40,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:40,685 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:53:40,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2022-11-18 19:53:40,692 INFO L350 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 33 treesize of output 33 [2022-11-18 19:53:40,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-18 19:53:40,739 INFO L350 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 26 treesize of output 14 [2022-11-18 19:53:40,788 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:40,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:40,864 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:53:40,865 INFO L350 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 50 treesize of output 54 [2022-11-18 19:53:40,961 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_320 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_320) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset|))) (or (forall ((v_ArrVal_319 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_319) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) |c_ULTIMATE.start_entry_point_#t~mem47#1.base|)) (forall ((v_ArrVal_320 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 32) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_320) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))))) (forall ((v_prenex_8 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_prenex_8) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) is different from false [2022-11-18 19:53:40,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1619059737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:40,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:40,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2022-11-18 19:53:41,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284545830] [2022-11-18 19:53:41,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:41,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:53:41,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:41,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:53:41,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=178, Unknown=2, NotChecked=54, Total=272 [2022-11-18 19:53:41,001 INFO L87 Difference]: Start difference. First operand 107 states and 128 transitions. Second operand has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:53:42,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:42,199 INFO L93 Difference]: Finished difference Result 132 states and 141 transitions. [2022-11-18 19:53:42,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:53:42,200 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2022-11-18 19:53:42,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:42,200 INFO L225 Difference]: With dead ends: 132 [2022-11-18 19:53:42,201 INFO L226 Difference]: Without dead ends: 132 [2022-11-18 19:53:42,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=97, Invalid=461, Unknown=2, NotChecked=90, Total=650 [2022-11-18 19:53:42,202 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 113 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:42,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 361 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 455 Invalid, 0 Unknown, 41 Unchecked, 0.8s Time] [2022-11-18 19:53:42,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-18 19:53:42,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 106. [2022-11-18 19:53:42,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.710144927536232) internal successors, (118), 96 states have internal predecessors, (118), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 19:53:42,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2022-11-18 19:53:42,208 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 28 [2022-11-18 19:53:42,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:42,209 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2022-11-18 19:53:42,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 11 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:53:42,209 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2022-11-18 19:53:42,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 19:53:42,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:42,210 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:42,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:42,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:42,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 19:53:42,628 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:42,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:42,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1444706688, now seen corresponding path program 1 times [2022-11-18 19:53:42,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:42,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1999286771] [2022-11-18 19:53:42,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:42,630 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 [2022-11-18 19:53:42,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:42,631 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:42,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:42,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:53:42,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:42,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:53:42,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:42,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:42,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1999286771] [2022-11-18 19:53:42,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1999286771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:42,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:42,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:53:42,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655814245] [2022-11-18 19:53:42,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:42,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:53:42,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:42,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:53:42,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:53:42,777 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 19:53:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:43,002 INFO L93 Difference]: Finished difference Result 105 states and 126 transitions. [2022-11-18 19:53:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:53:43,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-11-18 19:53:43,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:43,003 INFO L225 Difference]: With dead ends: 105 [2022-11-18 19:53:43,004 INFO L226 Difference]: Without dead ends: 105 [2022-11-18 19:53:43,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:53:43,004 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 30 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:43,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 124 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:53:43,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-18 19:53:43,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-11-18 19:53:43,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 69 states have (on average 1.6956521739130435) internal successors, (117), 95 states have internal predecessors, (117), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 19:53:43,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 126 transitions. [2022-11-18 19:53:43,009 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 126 transitions. Word has length 30 [2022-11-18 19:53:43,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:43,009 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 126 transitions. [2022-11-18 19:53:43,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 19:53:43,009 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 126 transitions. [2022-11-18 19:53:43,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-18 19:53:43,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:43,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:43,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:43,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:43,227 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:43,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:43,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1444706687, now seen corresponding path program 1 times [2022-11-18 19:53:43,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:43,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874862259] [2022-11-18 19:53:43,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:43,228 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 [2022-11-18 19:53:43,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:43,229 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:43,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:43,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:53:43,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 19:53:43,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:43,616 INFO L350 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 8 treesize of output 6 [2022-11-18 19:53:43,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 19:53:43,829 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:43,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874862259] [2022-11-18 19:53:43,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874862259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:43,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:43,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-18 19:53:43,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335735785] [2022-11-18 19:53:43,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:43,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:53:43,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:43,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:53:43,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:53:43,831 INFO L87 Difference]: Start difference. First operand 105 states and 126 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:53:44,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:44,476 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2022-11-18 19:53:44,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:53:44,476 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2022-11-18 19:53:44,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:44,477 INFO L225 Difference]: With dead ends: 103 [2022-11-18 19:53:44,478 INFO L226 Difference]: Without dead ends: 103 [2022-11-18 19:53:44,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:53:44,479 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 99 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:44,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 342 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:53:44,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-18 19:53:44,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 98. [2022-11-18 19:53:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 64 states have (on average 1.625) internal successors, (104), 88 states have internal predecessors, (104), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 19:53:44,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2022-11-18 19:53:44,483 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 30 [2022-11-18 19:53:44,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:44,484 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2022-11-18 19:53:44,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 10 states have internal predecessors, (35), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 19:53:44,484 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2022-11-18 19:53:44,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 19:53:44,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:44,485 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:44,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:44,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:44,698 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:44,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:44,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1836234894, now seen corresponding path program 1 times [2022-11-18 19:53:44,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:44,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1113397582] [2022-11-18 19:53:44,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:44,699 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 [2022-11-18 19:53:44,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:44,700 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:44,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:44,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:53:44,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:44,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:44,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:44,942 INFO L350 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 7 treesize of output 3 [2022-11-18 19:53:45,169 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-18 19:53:45,169 INFO L350 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 23 treesize of output 21 [2022-11-18 19:53:45,227 INFO L350 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 15 treesize of output 7 [2022-11-18 19:53:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:53:45,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:45,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:45,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1113397582] [2022-11-18 19:53:45,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1113397582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:45,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:45,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 19:53:45,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689498865] [2022-11-18 19:53:45,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:45,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:53:45,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:45,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:53:45,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:53:45,255 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:53:45,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:45,670 INFO L93 Difference]: Finished difference Result 176 states and 205 transitions. [2022-11-18 19:53:45,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:53:45,671 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2022-11-18 19:53:45,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:45,672 INFO L225 Difference]: With dead ends: 176 [2022-11-18 19:53:45,672 INFO L226 Difference]: Without dead ends: 176 [2022-11-18 19:53:45,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:53:45,673 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 90 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:45,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 548 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 60 Unchecked, 0.3s Time] [2022-11-18 19:53:45,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-18 19:53:45,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 107. [2022-11-18 19:53:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.5694444444444444) internal successors, (113), 96 states have internal predecessors, (113), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:53:45,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 123 transitions. [2022-11-18 19:53:45,679 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 123 transitions. Word has length 31 [2022-11-18 19:53:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:45,680 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 123 transitions. [2022-11-18 19:53:45,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.2) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:53:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 123 transitions. [2022-11-18 19:53:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 19:53:45,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:45,681 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:45,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:45,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:45,895 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:45,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1836234347, now seen corresponding path program 1 times [2022-11-18 19:53:45,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:45,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732475209] [2022-11-18 19:53:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:45,896 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 [2022-11-18 19:53:45,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:45,897 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:45,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-18 19:53:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:46,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:53:46,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:46,087 INFO L350 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 19 treesize of output 11 [2022-11-18 19:53:46,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:53:46,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:46,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:46,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732475209] [2022-11-18 19:53:46,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732475209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:46,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:46,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:53:46,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091331749] [2022-11-18 19:53:46,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:46,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:46,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:46,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:53:46,105 INFO L87 Difference]: Start difference. First operand 107 states and 123 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 19:53:46,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:46,465 INFO L93 Difference]: Finished difference Result 112 states and 128 transitions. [2022-11-18 19:53:46,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:53:46,465 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-11-18 19:53:46,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:46,466 INFO L225 Difference]: With dead ends: 112 [2022-11-18 19:53:46,467 INFO L226 Difference]: Without dead ends: 112 [2022-11-18 19:53:46,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:53:46,468 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 17 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:46,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 221 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:53:46,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-18 19:53:46,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 106. [2022-11-18 19:53:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 95 states have internal predecessors, (112), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:53:46,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2022-11-18 19:53:46,473 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 31 [2022-11-18 19:53:46,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:46,473 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2022-11-18 19:53:46,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 19:53:46,474 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2022-11-18 19:53:46,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 19:53:46,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:46,474 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:46,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:46,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:46,688 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1836234346, now seen corresponding path program 1 times [2022-11-18 19:53:46,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:46,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494047084] [2022-11-18 19:53:46,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:46,689 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 [2022-11-18 19:53:46,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:46,691 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:46,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-18 19:53:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:46,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:53:46,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:46,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-18 19:53:46,957 INFO L350 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 32 treesize of output 16 [2022-11-18 19:53:47,025 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:53:47,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:53:47,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:47,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494047084] [2022-11-18 19:53:47,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494047084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:53:47,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:53:47,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:53:47,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500822217] [2022-11-18 19:53:47,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:53:47,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:53:47,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:47,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:53:47,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:53:47,027 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 19:53:47,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:47,883 INFO L93 Difference]: Finished difference Result 118 states and 133 transitions. [2022-11-18 19:53:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:53:47,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-11-18 19:53:47,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:47,885 INFO L225 Difference]: With dead ends: 118 [2022-11-18 19:53:47,886 INFO L226 Difference]: Without dead ends: 118 [2022-11-18 19:53:47,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:53:47,887 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 21 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:47,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 242 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:53:47,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-18 19:53:47,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 105. [2022-11-18 19:53:47,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 72 states have (on average 1.5416666666666667) internal successors, (111), 94 states have internal predecessors, (111), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:53:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2022-11-18 19:53:47,892 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 31 [2022-11-18 19:53:47,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:47,892 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2022-11-18 19:53:47,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 19:53:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2022-11-18 19:53:47,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 19:53:47,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:47,893 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:47,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:48,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:48,103 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:48,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:48,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2032748399, now seen corresponding path program 1 times [2022-11-18 19:53:48,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:48,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700260943] [2022-11-18 19:53:48,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:48,104 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 [2022-11-18 19:53:48,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:48,105 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:48,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:53:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:48,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:53:48,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:48,237 INFO L350 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 [2022-11-18 19:53:48,343 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:53:48,343 INFO L350 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 [2022-11-18 19:53:48,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:48,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:48,468 INFO L350 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 16 treesize of output 8 [2022-11-18 19:53:48,615 INFO L350 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 14 treesize of output 16 [2022-11-18 19:53:48,659 INFO L350 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 15 treesize of output 7 [2022-11-18 19:53:48,690 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:48,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:48,717 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_438 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_438) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) (_ bv0 32))) is different from false [2022-11-18 19:53:48,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:48,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700260943] [2022-11-18 19:53:48,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700260943] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:48,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [100597887] [2022-11-18 19:53:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:48,727 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:53:48,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:53:48,731 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:53:48,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-18 19:53:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:48,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 19:53:48,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:48,942 INFO L350 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 [2022-11-18 19:53:49,001 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:53:49,002 INFO L350 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 [2022-11-18 19:53:49,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:49,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:49,057 INFO L350 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 16 treesize of output 8 [2022-11-18 19:53:49,161 INFO L350 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 14 treesize of output 16 [2022-11-18 19:53:49,181 INFO L350 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 15 treesize of output 7 [2022-11-18 19:53:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:49,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:49,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [100597887] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:49,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:49,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2022-11-18 19:53:49,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140957252] [2022-11-18 19:53:49,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:49,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:53:49,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:49,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:53:49,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=144, Unknown=9, NotChecked=24, Total=210 [2022-11-18 19:53:49,270 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:53:50,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:50,311 INFO L93 Difference]: Finished difference Result 142 states and 147 transitions. [2022-11-18 19:53:50,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:53:50,312 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2022-11-18 19:53:50,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:50,313 INFO L225 Difference]: With dead ends: 142 [2022-11-18 19:53:50,313 INFO L226 Difference]: Without dead ends: 142 [2022-11-18 19:53:50,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=103, Invalid=436, Unknown=17, NotChecked=44, Total=600 [2022-11-18 19:53:50,315 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 168 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:50,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 327 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 417 Invalid, 0 Unknown, 39 Unchecked, 0.7s Time] [2022-11-18 19:53:50,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-18 19:53:50,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 97. [2022-11-18 19:53:50,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.5846153846153845) internal successors, (103), 87 states have internal predecessors, (103), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 19:53:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2022-11-18 19:53:50,320 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 31 [2022-11-18 19:53:50,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:50,321 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2022-11-18 19:53:50,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 19:53:50,321 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2022-11-18 19:53:50,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 19:53:50,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:50,322 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:53:50,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:50,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:50,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 19:53:50,727 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:53:50,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:50,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1088706739, now seen corresponding path program 1 times [2022-11-18 19:53:50,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:50,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939428698] [2022-11-18 19:53:50,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:50,729 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 [2022-11-18 19:53:50,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:50,730 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:53:50,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-18 19:53:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:50,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:53:50,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:50,869 INFO L350 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 [2022-11-18 19:53:50,971 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:53:50,972 INFO L350 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 [2022-11-18 19:53:50,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:53,101 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_29| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_20| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_29|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_20|) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_29|))) is different from true [2022-11-18 19:53:55,306 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 19:53:55,306 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2022-11-18 19:53:55,312 INFO L350 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 27 treesize of output 29 [2022-11-18 19:53:55,386 INFO L350 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 24 treesize of output 16 [2022-11-18 19:53:55,456 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:53:55,457 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 15 [2022-11-18 19:53:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-18 19:53:55,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:57,416 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret48#1.base_41| (_ BitVec 32))) (or (forall ((v_ArrVal_483 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base|) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset| |v_ULTIMATE.start_entry_point_#t~ret48#1.base_41|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_483) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (_ bv0 32)))) (= |v_ULTIMATE.start_entry_point_#t~ret48#1.base_41| (_ bv0 32)))) is different from false [2022-11-18 19:53:57,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:57,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939428698] [2022-11-18 19:53:57,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939428698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:57,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [441491209] [2022-11-18 19:53:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:53:57,420 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:53:57,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:53:57,421 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:53:57,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-18 19:53:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:53:57,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:53:57,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:57,651 INFO L350 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 [2022-11-18 19:53:57,757 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:53:57,758 INFO L350 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 [2022-11-18 19:53:57,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:53:58,340 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:53:58,341 INFO L350 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 26 treesize of output 27 [2022-11-18 19:53:58,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-18 19:53:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:53:58,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:58,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [441491209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:53:58,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:58,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11] total 22 [2022-11-18 19:53:58,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943516985] [2022-11-18 19:53:58,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:58,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:53:58,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:53:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=564, Unknown=24, NotChecked=98, Total=756 [2022-11-18 19:53:58,868 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 19:54:00,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:00,978 INFO L93 Difference]: Finished difference Result 114 states and 128 transitions. [2022-11-18 19:54:00,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:54:00,980 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 32 [2022-11-18 19:54:00,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:00,981 INFO L225 Difference]: With dead ends: 114 [2022-11-18 19:54:00,981 INFO L226 Difference]: Without dead ends: 114 [2022-11-18 19:54:00,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=183, Invalid=1277, Unknown=30, NotChecked=150, Total=1640 [2022-11-18 19:54:00,983 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 61 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:00,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 664 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 553 Invalid, 0 Unknown, 204 Unchecked, 1.1s Time] [2022-11-18 19:54:00,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-18 19:54:00,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 105. [2022-11-18 19:54:00,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 72 states have (on average 1.5277777777777777) internal successors, (110), 94 states have internal predecessors, (110), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:54:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2022-11-18 19:54:00,988 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 32 [2022-11-18 19:54:00,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:00,989 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2022-11-18 19:54:00,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 18 states have internal predecessors, (44), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 19:54:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2022-11-18 19:54:00,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 19:54:00,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:00,990 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:01,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:01,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:01,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 19:54:01,404 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:54:01,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:01,405 INFO L85 PathProgramCache]: Analyzing trace with hash 738912307, now seen corresponding path program 1 times [2022-11-18 19:54:01,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:54:01,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773713415] [2022-11-18 19:54:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:01,405 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 [2022-11-18 19:54:01,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:54:01,406 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:54:01,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-18 19:54:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:01,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:54:01,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:01,536 INFO L350 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 19 treesize of output 11 [2022-11-18 19:54:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:54:01,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:54:01,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:54:01,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773713415] [2022-11-18 19:54:01,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773713415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:54:01,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:54:01,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:54:01,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258600283] [2022-11-18 19:54:01,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:54:01,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:54:01,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:54:01,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:54:01,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:54:01,556 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 19:54:01,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:01,863 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2022-11-18 19:54:01,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:54:01,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2022-11-18 19:54:01,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:01,865 INFO L225 Difference]: With dead ends: 106 [2022-11-18 19:54:01,865 INFO L226 Difference]: Without dead ends: 106 [2022-11-18 19:54:01,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:54:01,866 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 7 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:01,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 182 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:54:01,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-18 19:54:01,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-18 19:54:01,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 73 states have (on average 1.5205479452054795) internal successors, (111), 95 states have internal predecessors, (111), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:54:01,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2022-11-18 19:54:01,871 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 33 [2022-11-18 19:54:01,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:01,871 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2022-11-18 19:54:01,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 19:54:01,871 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2022-11-18 19:54:01,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:54:01,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:01,872 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:01,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:02,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:54:02,083 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:54:02,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:02,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1143014625, now seen corresponding path program 1 times [2022-11-18 19:54:02,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:54:02,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71374638] [2022-11-18 19:54:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:02,084 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 [2022-11-18 19:54:02,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:54:02,086 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:54:02,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-18 19:54:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:02,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-18 19:54:02,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:02,285 INFO L350 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 [2022-11-18 19:54:02,366 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:54:02,367 INFO L350 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 [2022-11-18 19:54:02,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:54:04,488 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_33| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_22| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_33|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_22|) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_33|))) is different from true [2022-11-18 19:54:04,499 INFO L350 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 [2022-11-18 19:54:08,685 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 19:54:08,686 INFO L350 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 42 treesize of output 32 [2022-11-18 19:54:08,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 19:54:08,838 INFO L350 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 19 [2022-11-18 19:54:08,920 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:54:08,920 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2022-11-18 19:54:08,973 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_550 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_550))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-18 19:54:09,008 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 19:54:09,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 19:54:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2022-11-18 19:54:09,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:09,580 INFO L350 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 76 [2022-11-18 19:54:09,593 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret48#1.base_47| (_ BitVec 32)) (v_ArrVal_549 (Array (_ BitVec 32) (_ BitVec 32)))) (= |v_ULTIMATE.start_entry_point_#t~ret48#1.base_47| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base|) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset| |v_ULTIMATE.start_entry_point_#t~ret48#1.base_47|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_549) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) is different from false [2022-11-18 19:54:09,595 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:54:09,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71374638] [2022-11-18 19:54:09,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71374638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:09,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [465935315] [2022-11-18 19:54:09,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:09,596 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:54:09,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:54:09,597 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:54:09,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-18 19:54:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:09,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-18 19:54:09,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:09,888 INFO L350 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 [2022-11-18 19:54:12,108 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:54:12,109 INFO L350 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 [2022-11-18 19:54:12,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:54:12,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:54:14,381 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_35| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_35|) (_ bv0 32)) |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_35|))) is different from true [2022-11-18 19:54:14,397 INFO L350 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 [2022-11-18 19:54:22,673 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 19:54:22,674 INFO L350 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 42 treesize of output 32 [2022-11-18 19:54:22,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 19:54:22,881 INFO L350 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 19 [2022-11-18 19:54:23,000 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:54:23,001 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 18 [2022-11-18 19:54:23,019 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_584 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_584))))) is different from true [2022-11-18 19:54:23,055 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 19:54:23,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 19:54:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 10 not checked. [2022-11-18 19:54:23,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:23,320 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base|) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset| |c_ULTIMATE.start_entry_point_#t~ret48#1.base|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_582) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))))) is different from false [2022-11-18 19:54:23,344 INFO L350 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 76 [2022-11-18 19:54:23,358 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_582 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_entry_point_#t~ret48#1.base_50| (_ BitVec 32))) (= |v_ULTIMATE.start_entry_point_#t~ret48#1.base_50| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base|) |c_ULTIMATE.start_entry_point_#t~mem47#1.offset| |v_ULTIMATE.start_entry_point_#t~ret48#1.base_50|)))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_582) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) is different from false [2022-11-18 19:54:23,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [465935315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:23,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:54:23,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2022-11-18 19:54:23,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742290632] [2022-11-18 19:54:23,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:23,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:54:23,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:54:23,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:54:23,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=897, Unknown=14, NotChecked=462, Total=1482 [2022-11-18 19:54:23,363 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 31 states, 28 states have (on average 1.75) internal successors, (49), 25 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-18 19:54:41,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:41,071 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2022-11-18 19:54:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:54:41,080 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 1.75) internal successors, (49), 25 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 37 [2022-11-18 19:54:41,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:41,081 INFO L225 Difference]: With dead ends: 119 [2022-11-18 19:54:41,081 INFO L226 Difference]: Without dead ends: 119 [2022-11-18 19:54:41,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=206, Invalid=1526, Unknown=18, NotChecked=602, Total=2352 [2022-11-18 19:54:41,083 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 80 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 1234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 522 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:41,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 669 Invalid, 1234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 698 Invalid, 0 Unknown, 522 Unchecked, 1.0s Time] [2022-11-18 19:54:41,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-18 19:54:41,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 111. [2022-11-18 19:54:41,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 98 states have internal predecessors, (117), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-18 19:54:41,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 130 transitions. [2022-11-18 19:54:41,087 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 130 transitions. Word has length 37 [2022-11-18 19:54:41,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:41,088 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 130 transitions. [2022-11-18 19:54:41,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 1.75) internal successors, (49), 25 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-18 19:54:41,088 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 130 transitions. [2022-11-18 19:54:41,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:54:41,089 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:41,089 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:54:41,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:41,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:41,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 19:54:41,507 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:54:41,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:41,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1143014624, now seen corresponding path program 1 times [2022-11-18 19:54:41,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:54:41,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755618302] [2022-11-18 19:54:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:41,508 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 [2022-11-18 19:54:41,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:54:41,509 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:54:41,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-18 19:54:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:41,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 19:54:41,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:41,674 INFO L350 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 [2022-11-18 19:54:41,749 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:54:41,749 INFO L350 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 [2022-11-18 19:54:41,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:54:43,853 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_25| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_37| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_37| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_37|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_25|)))) is different from true [2022-11-18 19:54:45,908 INFO L350 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 [2022-11-18 19:54:45,915 INFO L350 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 [2022-11-18 19:54:48,186 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 19:54:48,186 INFO L350 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 55 treesize of output 41 [2022-11-18 19:54:48,193 INFO L350 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 50 [2022-11-18 19:54:48,550 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-18 19:54:48,551 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 45 [2022-11-18 19:54:48,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 19:54:48,710 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_618 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_618) |c_#length|)))) is different from true [2022-11-18 19:54:48,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:54:48,736 INFO L350 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 12 treesize of output 14 [2022-11-18 19:54:48,751 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:54:48,751 INFO L350 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 [2022-11-18 19:54:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2022-11-18 19:54:48,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:51,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:54:51,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755618302] [2022-11-18 19:54:51,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755618302] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:51,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [849527658] [2022-11-18 19:54:51,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:54:51,679 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:54:51,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:54:51,680 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:54:51,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-18 19:54:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:54:51,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 19:54:51,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:51,983 INFO L350 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 [2022-11-18 19:54:52,276 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:54:52,276 INFO L350 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 [2022-11-18 19:54:52,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:54:52,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:54:52,908 INFO L350 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 [2022-11-18 19:54:52,925 INFO L350 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 [2022-11-18 19:54:53,383 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:54:53,383 INFO L350 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 55 treesize of output 41 [2022-11-18 19:54:53,392 INFO L350 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 53 [2022-11-18 19:54:53,997 INFO L321 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-11-18 19:54:53,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 78 treesize of output 44 [2022-11-18 19:54:54,023 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 19:54:54,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-18 19:54:54,059 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_653 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_653))))) is different from true [2022-11-18 19:54:54,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:54:54,083 INFO L350 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 12 treesize of output 14 [2022-11-18 19:54:54,101 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:54:54,102 INFO L350 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 [2022-11-18 19:54:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-18 19:54:54,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:54:54,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [849527658] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:54:54,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:54:54,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 35 [2022-11-18 19:54:54,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983952077] [2022-11-18 19:54:54,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:54:54,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 19:54:54,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:54:54,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 19:54:54,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1083, Unknown=4, NotChecked=204, Total=1406 [2022-11-18 19:54:54,493 INFO L87 Difference]: Start difference. First operand 111 states and 130 transitions. Second operand has 36 states, 32 states have (on average 1.625) internal successors, (52), 27 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-18 19:55:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:00,842 INFO L93 Difference]: Finished difference Result 113 states and 130 transitions. [2022-11-18 19:55:00,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 19:55:00,843 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 1.625) internal successors, (52), 27 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 37 [2022-11-18 19:55:00,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:00,844 INFO L225 Difference]: With dead ends: 113 [2022-11-18 19:55:00,844 INFO L226 Difference]: Without dead ends: 113 [2022-11-18 19:55:00,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=221, Invalid=1857, Unknown=4, NotChecked=270, Total=2352 [2022-11-18 19:55:00,845 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 59 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 509 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:00,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 904 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 638 Invalid, 0 Unknown, 509 Unchecked, 1.2s Time] [2022-11-18 19:55:00,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-18 19:55:00,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2022-11-18 19:55:00,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 77 states have (on average 1.4935064935064934) internal successors, (115), 98 states have internal predecessors, (115), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-18 19:55:00,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2022-11-18 19:55:00,850 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 37 [2022-11-18 19:55:00,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:00,850 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2022-11-18 19:55:00,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 1.625) internal successors, (52), 27 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 8 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-18 19:55:00,851 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2022-11-18 19:55:00,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:55:00,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:00,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:00,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:01,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:01,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:55:01,256 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:55:01,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:01,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1229276979, now seen corresponding path program 1 times [2022-11-18 19:55:01,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:55:01,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767136462] [2022-11-18 19:55:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:01,257 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 [2022-11-18 19:55:01,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:55:01,258 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:55:01,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-18 19:55:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:01,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:55:01,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:01,455 INFO L350 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 12 treesize of output 18 [2022-11-18 19:55:01,520 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_675 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_675) |c_#valid|)) (not (= |ldv_malloc_#res.base| (_ bv0 32))))) is different from true [2022-11-18 19:55:01,539 INFO L350 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 12 treesize of output 18 [2022-11-18 19:55:01,914 INFO L321 Elim1Store]: treesize reduction 3, result has 81.3 percent of original size [2022-11-18 19:55:01,914 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 30 [2022-11-18 19:55:01,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-18 19:55:02,090 INFO L321 Elim1Store]: treesize reduction 32, result has 27.3 percent of original size [2022-11-18 19:55:02,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 39 [2022-11-18 19:55:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 4 not checked. [2022-11-18 19:55:02,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:02,446 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:55:02,447 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 42 [2022-11-18 19:55:02,453 INFO L350 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 24 treesize of output 16 [2022-11-18 19:55:02,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:55:02,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767136462] [2022-11-18 19:55:02,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767136462] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:02,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [479603549] [2022-11-18 19:55:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:02,656 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:55:02,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:55:02,657 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:55:02,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-18 19:55:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:02,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:55:02,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:02,896 INFO L350 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 [2022-11-18 19:55:03,018 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:55:03,019 INFO L350 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 [2022-11-18 19:55:03,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:55:03,233 INFO L350 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 7 treesize of output 5 [2022-11-18 19:55:07,450 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:55:07,450 INFO L350 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 19 treesize of output 22 [2022-11-18 19:55:07,491 INFO L350 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 16 treesize of output 8 [2022-11-18 19:55:07,571 INFO L350 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 20 [2022-11-18 19:55:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:07,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:07,692 WARN L837 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_entry_point_~a10~0#1.base|))) (forall ((v_ArrVal_697 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_697) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) |c_ULTIMATE.start_entry_point_~a10~0#1.base|)))) is different from false [2022-11-18 19:55:07,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [479603549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:07,717 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:55:07,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2022-11-18 19:55:07,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799617964] [2022-11-18 19:55:07,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:07,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:55:07,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:55:07,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:55:07,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=697, Unknown=3, NotChecked=110, Total=930 [2022-11-18 19:55:07,719 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 21 states have internal predecessors, (57), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:55:19,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:19,980 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2022-11-18 19:55:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:55:19,980 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 21 states have internal predecessors, (57), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 36 [2022-11-18 19:55:19,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:19,982 INFO L225 Difference]: With dead ends: 175 [2022-11-18 19:55:19,982 INFO L226 Difference]: Without dead ends: 175 [2022-11-18 19:55:19,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=275, Invalid=1618, Unknown=7, NotChecked=170, Total=2070 [2022-11-18 19:55:19,992 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 168 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 1036 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1036 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 253 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:19,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 799 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1036 Invalid, 0 Unknown, 253 Unchecked, 1.5s Time] [2022-11-18 19:55:19,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-18 19:55:19,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 120. [2022-11-18 19:55:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 84 states have (on average 1.4642857142857142) internal successors, (123), 106 states have internal predecessors, (123), 5 states have call successors, (5), 5 states have call predecessors, (5), 7 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-18 19:55:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 136 transitions. [2022-11-18 19:55:20,002 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 136 transitions. Word has length 36 [2022-11-18 19:55:20,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:20,002 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 136 transitions. [2022-11-18 19:55:20,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 21 states have internal predecessors, (57), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-18 19:55:20,002 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 136 transitions. [2022-11-18 19:55:20,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:55:20,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:20,003 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:20,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:20,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-18 19:55:20,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:55:20,404 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:55:20,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:20,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1653548802, now seen corresponding path program 1 times [2022-11-18 19:55:20,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:55:20,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339532666] [2022-11-18 19:55:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:20,405 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 [2022-11-18 19:55:20,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:55:20,406 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:55:20,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-18 19:55:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:20,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 19:55:20,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:20,585 INFO L350 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 [2022-11-18 19:55:20,676 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:55:20,677 INFO L350 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 [2022-11-18 19:55:20,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:55:22,802 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_31| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_44| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_44| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_44|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_31|)))) is different from true [2022-11-18 19:55:25,028 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 19:55:25,028 INFO L350 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 55 treesize of output 41 [2022-11-18 19:55:25,035 INFO L350 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 33 [2022-11-18 19:55:25,230 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-18 19:55:25,231 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 36 [2022-11-18 19:55:25,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 19:55:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-18 19:55:25,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:46,489 INFO L350 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 140 treesize of output 112 [2022-11-18 19:55:46,678 INFO L321 Elim1Store]: treesize reduction 14, result has 54.8 percent of original size [2022-11-18 19:55:46,679 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 246 treesize of output 190 [2022-11-18 19:55:47,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:55:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:55:47,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:55:47,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339532666] [2022-11-18 19:55:47,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339532666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:47,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:55:47,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 23 [2022-11-18 19:55:47,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075779636] [2022-11-18 19:55:47,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:47,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:55:47,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:55:47,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:55:47,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=402, Unknown=6, NotChecked=40, Total=506 [2022-11-18 19:55:47,641 INFO L87 Difference]: Start difference. First operand 120 states and 136 transitions. Second operand has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:56:16,605 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:56:17,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:17,427 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2022-11-18 19:56:17,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:56:17,428 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 37 [2022-11-18 19:56:17,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:17,429 INFO L225 Difference]: With dead ends: 109 [2022-11-18 19:56:17,429 INFO L226 Difference]: Without dead ends: 109 [2022-11-18 19:56:17,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 53.6s TimeCoverageRelationStatistics Valid=123, Invalid=861, Unknown=12, NotChecked=60, Total=1056 [2022-11-18 19:56:17,430 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 36 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:17,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 656 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 468 Invalid, 0 Unknown, 233 Unchecked, 2.2s Time] [2022-11-18 19:56:17,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-18 19:56:17,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2022-11-18 19:56:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 77 states have (on average 1.4285714285714286) internal successors, (110), 98 states have internal predecessors, (110), 4 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-18 19:56:17,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 120 transitions. [2022-11-18 19:56:17,435 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 120 transitions. Word has length 37 [2022-11-18 19:56:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:17,435 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 120 transitions. [2022-11-18 19:56:17,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 19 states have internal predecessors, (44), 5 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:56:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 120 transitions. [2022-11-18 19:56:17,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 19:56:17,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:17,437 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:17,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:17,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:56:17,643 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:56:17,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:17,643 INFO L85 PathProgramCache]: Analyzing trace with hash 219174838, now seen corresponding path program 1 times [2022-11-18 19:56:17,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:56:17,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1207074254] [2022-11-18 19:56:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:17,644 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 [2022-11-18 19:56:17,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:56:17,645 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:56:17,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-18 19:56:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:17,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 19:56:17,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:18,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:56:18,512 INFO L350 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 11 treesize of output 7 [2022-11-18 19:56:18,868 INFO L350 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 15 treesize of output 7 [2022-11-18 19:56:19,090 INFO L321 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2022-11-18 19:56:19,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 36 [2022-11-18 19:56:19,741 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 19:56:19,741 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 43 [2022-11-18 19:56:20,799 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:56:20,800 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 42 [2022-11-18 19:56:31,456 WARN L859 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32))) (exists ((|v_ULTIMATE.start_entry_point_#t~mem53#1.base_16| (_ BitVec 32)) (v_ArrVal_753 (_ BitVec 1)) (|ULTIMATE.start_entry_point_~a10~0#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base| v_ArrVal_753))) (and (not (= |ULTIMATE.start_entry_point_~a10~0#1.base| |v_ULTIMATE.start_entry_point_#t~mem53#1.base_16|)) (= (_ bv0 1) (select .cse0 |v_ULTIMATE.start_entry_point_#t~mem53#1.base_16|)) (not (= |v_ULTIMATE.start_entry_point_#t~mem53#1.base_16| (_ bv0 32))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base|) (_ bv0 1)) (= (store (store .cse0 |v_ULTIMATE.start_entry_point_#t~mem53#1.base_16| (_ bv0 1)) |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1)) |c_#valid|) (not (= |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 32))))))) is different from true [2022-11-18 19:56:31,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:56:31,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:32,609 INFO L350 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 27 treesize of output 25 [2022-11-18 19:57:11,354 WARN L233 SmtUtils]: Spent 16.19s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:57:11,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:11,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1207074254] [2022-11-18 19:57:11,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1207074254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:11,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1475522728] [2022-11-18 19:57:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:11,356 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:57:11,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:57:11,357 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:57:11,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-11-18 19:57:11,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:11,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 19:57:11,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:12,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:13,307 INFO L321 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2022-11-18 19:57:13,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 18 [2022-11-18 19:57:21,903 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:57:21,904 INFO L350 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 36 treesize of output 37 [2022-11-18 19:57:22,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-18 19:57:24,714 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_entry_point_#t~mem53#1.base_18| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~a10~0#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv1 1)))) (and (= |c_#valid| (store (store .cse0 |v_ULTIMATE.start_entry_point_#t~mem53#1.base_18| (_ bv0 1)) |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base|) (_ bv0 1)) (= (_ bv0 1) (select .cse0 |v_ULTIMATE.start_entry_point_#t~mem53#1.base_18|))))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)))) is different from true [2022-11-18 19:57:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:57:24,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:24,831 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_779 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_old_#valid#1| (store (store |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_#t~mem47#1.base| v_ArrVal_779) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) (_ bv0 1)) |c_ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1)))) is different from false [2022-11-18 19:57:24,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1475522728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:24,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:24,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 29 [2022-11-18 19:57:24,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314619072] [2022-11-18 19:57:24,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:24,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:57:24,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:24,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:57:24,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1542, Unknown=21, NotChecked=246, Total=1980 [2022-11-18 19:57:24,874 INFO L87 Difference]: Start difference. First operand 109 states and 120 transitions. Second operand has 31 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 25 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:57:40,828 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_entry_point_#t~mem53#1.base_18| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~a10~0#1.base| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv1 1)))) (and (= |c_#valid| (store (store .cse0 |v_ULTIMATE.start_entry_point_#t~mem53#1.base_18| (_ bv0 1)) |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base|) (_ bv0 1)) (= (_ bv0 1) (select .cse0 |v_ULTIMATE.start_entry_point_#t~mem53#1.base_18|))))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32))) (exists ((|v_ULTIMATE.start_entry_point_#t~mem53#1.base_16| (_ BitVec 32)) (v_ArrVal_753 (_ BitVec 1)) (|ULTIMATE.start_entry_point_~a10~0#1.base| (_ BitVec 32))) (let ((.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base| v_ArrVal_753))) (and (not (= |ULTIMATE.start_entry_point_~a10~0#1.base| |v_ULTIMATE.start_entry_point_#t~mem53#1.base_16|)) (= (_ bv0 1) (select .cse1 |v_ULTIMATE.start_entry_point_#t~mem53#1.base_16|)) (not (= |v_ULTIMATE.start_entry_point_#t~mem53#1.base_16| (_ bv0 32))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~a10~0#1.base|) (_ bv0 1)) (= (store (store .cse1 |v_ULTIMATE.start_entry_point_#t~mem53#1.base_16| (_ bv0 1)) |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 1)) |c_#valid|) (not (= |ULTIMATE.start_entry_point_~a10~0#1.base| (_ bv0 32))))))) is different from true [2022-11-18 19:57:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:41,083 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2022-11-18 19:57:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:57:41,084 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 25 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 38 [2022-11-18 19:57:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:41,085 INFO L225 Difference]: With dead ends: 111 [2022-11-18 19:57:41,085 INFO L226 Difference]: Without dead ends: 95 [2022-11-18 19:57:41,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 78.7s TimeCoverageRelationStatistics Valid=296, Invalid=2776, Unknown=24, NotChecked=444, Total=3540 [2022-11-18 19:57:41,087 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 13 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 431 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:41,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 447 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 431 Unchecked, 0.5s Time] [2022-11-18 19:57:41,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-18 19:57:41,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-18 19:57:41,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.5) internal successors, (96), 85 states have internal predecessors, (96), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 19:57:41,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2022-11-18 19:57:41,092 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 38 [2022-11-18 19:57:41,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:41,092 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2022-11-18 19:57:41,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 2.0357142857142856) internal successors, (57), 25 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-18 19:57:41,093 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2022-11-18 19:57:41,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 19:57:41,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:41,093 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:41,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:41,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:41,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:41,500 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:57:41,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:41,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1047942818, now seen corresponding path program 1 times [2022-11-18 19:57:41,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:41,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56847312] [2022-11-18 19:57:41,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:41,502 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 [2022-11-18 19:57:41,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:41,503 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:57:41,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-18 19:57:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:41,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:57:41,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:41,712 INFO L350 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 [2022-11-18 19:57:41,789 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-11-18 19:57:41,831 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:57:41,831 INFO L350 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 [2022-11-18 19:57:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 19:57:41,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:41,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:41,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56847312] [2022-11-18 19:57:41,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56847312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:41,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:41,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:57:41,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421922071] [2022-11-18 19:57:41,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:41,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:57:41,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:41,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:57:41,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2022-11-18 19:57:41,887 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 19:57:42,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:42,288 INFO L93 Difference]: Finished difference Result 94 states and 103 transitions. [2022-11-18 19:57:42,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:57:42,288 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2022-11-18 19:57:42,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:42,289 INFO L225 Difference]: With dead ends: 94 [2022-11-18 19:57:42,289 INFO L226 Difference]: Without dead ends: 94 [2022-11-18 19:57:42,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-11-18 19:57:42,290 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 46 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:42,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 108 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 108 Invalid, 0 Unknown, 81 Unchecked, 0.4s Time] [2022-11-18 19:57:42,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-18 19:57:42,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-18 19:57:42,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 64 states have (on average 1.46875) internal successors, (94), 84 states have internal predecessors, (94), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 19:57:42,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2022-11-18 19:57:42,294 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 40 [2022-11-18 19:57:42,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:42,295 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2022-11-18 19:57:42,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 19:57:42,295 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2022-11-18 19:57:42,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 19:57:42,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:42,296 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:42,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:42,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:42,512 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:57:42,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:42,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1047942817, now seen corresponding path program 1 times [2022-11-18 19:57:42,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:42,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184759919] [2022-11-18 19:57:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:42,513 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 [2022-11-18 19:57:42,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:42,514 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:57:42,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-18 19:57:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:42,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:57:42,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:43,072 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_836 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_836) |c_#length|)))) is different from true [2022-11-18 19:57:43,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:43,109 INFO L350 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 16 [2022-11-18 19:57:43,135 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:57:43,135 INFO L350 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 [2022-11-18 19:57:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 2 not checked. [2022-11-18 19:57:43,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:46,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:46,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184759919] [2022-11-18 19:57:46,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184759919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:46,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1559257419] [2022-11-18 19:57:46,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:46,043 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:57:46,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:57:46,044 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:57:46,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2022-11-18 19:57:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:46,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-18 19:57:46,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:46,557 INFO L350 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 [2022-11-18 19:57:46,569 INFO L350 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 [2022-11-18 19:57:47,121 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:57:47,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-18 19:57:47,173 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:57:47,173 INFO L350 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 [2022-11-18 19:57:47,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:47,498 INFO L350 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 8 treesize of output 4 [2022-11-18 19:57:47,573 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_871 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_871) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-18 19:57:47,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:47,607 INFO L350 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 12 treesize of output 14 [2022-11-18 19:57:47,638 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:57:47,639 INFO L350 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 [2022-11-18 19:57:47,911 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_872 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_872) |c_#length|)))) is different from true [2022-11-18 19:57:47,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:47,946 INFO L350 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 12 treesize of output 14 [2022-11-18 19:57:47,985 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:57:47,985 INFO L350 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 [2022-11-18 19:57:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 10 not checked. [2022-11-18 19:57:48,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:50,384 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (and (forall ((|v_ldv_malloc_#res.base_165| (_ BitVec 32))) (or (forall ((v_ArrVal_875 (_ BitVec 32))) (bvule .cse0 (select (store |c_#length| |v_ldv_malloc_#res.base_165| v_ArrVal_875) |c_ULTIMATE.start_entry_point_~a10~0#1.base|))) (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_165|))))) (or (forall ((|v_ldv_malloc_#res.base_165| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_165|)))) (bvule |c_ULTIMATE.start_entry_point_~a10~0#1.offset| .cse0)))) is different from false [2022-11-18 19:57:50,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1559257419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:50,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:50,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13] total 20 [2022-11-18 19:57:50,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081228357] [2022-11-18 19:57:50,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:50,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:57:50,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:50,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:57:50,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=354, Unknown=4, NotChecked=164, Total=600 [2022-11-18 19:57:50,392 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand has 21 states, 20 states have (on average 2.75) internal successors, (55), 18 states have internal predecessors, (55), 4 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:57:52,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:52,541 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2022-11-18 19:57:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:57:52,542 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.75) internal successors, (55), 18 states have internal predecessors, (55), 4 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 40 [2022-11-18 19:57:52,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:52,543 INFO L225 Difference]: With dead ends: 99 [2022-11-18 19:57:52,543 INFO L226 Difference]: Without dead ends: 99 [2022-11-18 19:57:52,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=127, Invalid=587, Unknown=4, NotChecked=212, Total=930 [2022-11-18 19:57:52,545 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 225 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 278 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:52,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 331 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 492 Invalid, 0 Unknown, 278 Unchecked, 1.6s Time] [2022-11-18 19:57:52,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-18 19:57:52,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 79. [2022-11-18 19:57:52,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 52 states have (on average 1.3653846153846154) internal successors, (71), 70 states have internal predecessors, (71), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 19:57:52,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2022-11-18 19:57:52,549 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 40 [2022-11-18 19:57:52,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:52,550 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2022-11-18 19:57:52,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.75) internal successors, (55), 18 states have internal predecessors, (55), 4 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 19:57:52,550 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2022-11-18 19:57:52,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 19:57:52,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:52,551 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:52,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:52,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:52,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 19:57:52,952 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:57:52,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:52,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1873511044, now seen corresponding path program 1 times [2022-11-18 19:57:52,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:52,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871665502] [2022-11-18 19:57:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:52,953 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 [2022-11-18 19:57:52,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:52,959 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:57:52,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-18 19:57:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:53,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-18 19:57:53,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:53,196 INFO L350 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 [2022-11-18 19:57:53,428 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:57:53,429 INFO L350 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 [2022-11-18 19:57:53,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:53,510 INFO L350 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 6 treesize of output 5 [2022-11-18 19:57:53,781 INFO L350 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 7 treesize of output 5 [2022-11-18 19:58:02,019 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:58:02,019 INFO L350 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 [2022-11-18 19:58:02,241 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 19:58:02,241 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 39 [2022-11-18 19:58:02,259 INFO L350 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 27 treesize of output 29 [2022-11-18 19:58:02,609 INFO L350 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 24 treesize of output 16 [2022-11-18 19:58:02,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-11-18 19:58:09,117 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_alloc_10_#t~mem38#1.offset| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_59| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_44| (_ BitVec 32))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_59|) |v_ULTIMATE.start_entry_point_~a10~0#1.offset_BEFORE_CALL_44|))) (and (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_59| .cse0)) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_59| (select (select |c_#memory_$Pointer$.base| .cse0) |ULTIMATE.start_alloc_10_#t~mem38#1.offset|)))))) (exists ((v_ArrVal_909 (_ BitVec 1)) (|ldv_malloc_#res.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_909)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|))))) is different from true [2022-11-18 19:58:09,250 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-18 19:58:09,250 INFO L350 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 23 treesize of output 35 [2022-11-18 19:58:09,478 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 19:58:09,479 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2022-11-18 19:58:09,508 INFO L350 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 16 treesize of output 12 [2022-11-18 19:58:09,754 INFO L350 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 15 [2022-11-18 19:58:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-18 19:58:09,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:10,100 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_910 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_910) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (_ bv1 1)))) is different from false [2022-11-18 19:58:10,513 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:10,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871665502] [2022-11-18 19:58:10,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871665502] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:10,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [357479609] [2022-11-18 19:58:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:10,514 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:58:10,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:58:10,515 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:58:10,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2022-11-18 19:58:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:10,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-18 19:58:10,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:10,898 INFO L350 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 [2022-11-18 19:58:13,511 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:58:13,512 INFO L350 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 [2022-11-18 19:58:13,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:13,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:14,283 INFO L350 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 7 treesize of output 5 [2022-11-18 19:58:16,790 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:58:16,790 INFO L350 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 [2022-11-18 19:58:17,232 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:58:17,232 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 39 [2022-11-18 19:58:17,250 INFO L350 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 34 treesize of output 34 [2022-11-18 19:58:17,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-18 19:58:18,264 INFO L350 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 11 treesize of output 5 [2022-11-18 19:58:28,528 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_62| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_62| (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_62|) (_ bv0 32))) (_ bv0 32))))) (exists ((v_ArrVal_948 (_ BitVec 1)) (|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_948) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|))))) is different from true [2022-11-18 19:58:28,655 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-18 19:58:28,655 INFO L350 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 23 treesize of output 35 [2022-11-18 19:58:28,948 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 19:58:28,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 45 [2022-11-18 19:58:28,963 INFO L350 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 16 treesize of output 12 [2022-11-18 19:58:29,395 INFO L350 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 15 [2022-11-18 19:58:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-18 19:58:29,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:29,447 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_949 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_949) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 19:58:29,580 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_949 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ldv_malloc_#res.base_171| (_ BitVec 32)) (v_ArrVal_952 (_ BitVec 1))) (or (not (= (select |c_#valid| |v_ldv_malloc_#res.base_171|) (_ bv0 1))) (= (_ bv0 1) (bvadd (select (store |c_#valid| |v_ldv_malloc_#res.base_171| v_ArrVal_952) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_949) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (_ bv1 1))))) is different from false [2022-11-18 19:58:29,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [357479609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:29,584 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:29,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 39 [2022-11-18 19:58:29,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656293421] [2022-11-18 19:58:29,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:29,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 19:58:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:58:29,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 19:58:29,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1481, Unknown=27, NotChecked=410, Total=2070 [2022-11-18 19:58:29,587 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand has 40 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 34 states have internal predecessors, (61), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 19:58:39,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:39,415 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2022-11-18 19:58:39,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 19:58:39,416 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 34 states have internal predecessors, (61), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 41 [2022-11-18 19:58:39,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:39,416 INFO L225 Difference]: With dead ends: 96 [2022-11-18 19:58:39,416 INFO L226 Difference]: Without dead ends: 96 [2022-11-18 19:58:39,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=273, Invalid=2371, Unknown=28, NotChecked=520, Total=3192 [2022-11-18 19:58:39,418 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 99 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 243 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:39,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 563 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 666 Invalid, 0 Unknown, 243 Unchecked, 2.2s Time] [2022-11-18 19:58:39,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-18 19:58:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 86. [2022-11-18 19:58:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.3448275862068966) internal successors, (78), 76 states have internal predecessors, (78), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 19:58:39,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2022-11-18 19:58:39,422 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 41 [2022-11-18 19:58:39,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:39,423 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2022-11-18 19:58:39,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 1.6486486486486487) internal successors, (61), 34 states have internal predecessors, (61), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 19:58:39,423 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2022-11-18 19:58:39,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 19:58:39,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:39,424 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:39,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:39,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:39,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 19:58:39,840 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:58:39,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:39,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1873511045, now seen corresponding path program 1 times [2022-11-18 19:58:39,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:39,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230415919] [2022-11-18 19:58:39,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:39,841 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 [2022-11-18 19:58:39,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:39,842 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:58:39,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-18 19:58:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:40,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-18 19:58:40,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:40,118 INFO L350 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 [2022-11-18 19:58:40,298 INFO L350 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 [2022-11-18 19:58:40,475 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 19:58:40,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 19:58:40,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:40,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:40,985 INFO L350 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 19:58:40,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-18 19:58:43,383 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-18 19:58:43,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-18 19:58:43,483 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 19:58:43,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 19:58:43,774 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 19:58:43,774 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 48 [2022-11-18 19:58:43,792 INFO L350 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 54 treesize of output 52 [2022-11-18 19:58:44,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-18 19:58:44,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-11-18 19:58:47,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:47,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:58:47,452 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-18 19:58:47,453 INFO L350 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 17 treesize of output 17 [2022-11-18 19:58:47,797 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 19:58:47,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 90 treesize of output 77 [2022-11-18 19:58:47,842 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:58:47,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 61 [2022-11-18 19:58:48,278 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-18 19:58:48,279 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 24 [2022-11-18 19:58:48,291 INFO L350 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 15 treesize of output 7 [2022-11-18 19:58:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:48,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:49,217 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_992 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_991 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_992) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_991) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) (forall ((v_ArrVal_992 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_992) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) is different from false [2022-11-18 19:58:54,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:54,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230415919] [2022-11-18 19:58:54,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230415919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:58:54,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [610200642] [2022-11-18 19:58:54,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:54,601 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:58:54,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:58:54,602 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:58:54,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2022-11-18 19:58:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:55,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 19:58:55,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:55,033 INFO L350 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 [2022-11-18 19:58:55,629 INFO L350 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 [2022-11-18 19:58:55,750 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 19:58:55,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 19:58:56,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:56,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:56,692 INFO L350 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 19:58:56,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-18 19:59:03,388 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-18 19:59:03,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2022-11-18 19:59:03,490 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 19:59:03,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 19:59:03,905 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:59:03,905 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 48 [2022-11-18 19:59:03,921 INFO L350 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 54 treesize of output 52 [2022-11-18 19:59:05,421 INFO L350 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 9 treesize of output 3 [2022-11-18 19:59:05,440 INFO L350 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 11 treesize of output 5 [2022-11-18 19:59:07,834 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1033 (_ BitVec 32)) (|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1033) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) (exists ((|v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_68| (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_68|) (_ bv0 32))) (.cse1 (select (select |c_#memory_$Pointer$.offset| |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_68|) (_ bv0 32)))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| .cse2) .cse1))) (and (not (= .cse0 |v_ULTIMATE.start_entry_point_~a10~0#1.base_BEFORE_CALL_68|)) (= .cse1 (_ bv0 32)) (not (= .cse0 .cse2))))))) is different from true [2022-11-18 19:59:07,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:07,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:59:07,957 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-11-18 19:59:07,958 INFO L350 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 17 treesize of output 17 [2022-11-18 19:59:08,492 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 19:59:08,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 82 treesize of output 71 [2022-11-18 19:59:08,546 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:59:08,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 61 [2022-11-18 19:59:09,190 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:59:09,190 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 24 [2022-11-18 19:59:09,199 INFO L350 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 15 treesize of output 7 [2022-11-18 19:59:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-18 19:59:09,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:09,345 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1034 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1035 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1035) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1034) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) (forall ((v_ArrVal_1035 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1035) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse0 (bvadd .cse0 (_ bv4 32)))))) is different from false [2022-11-18 19:59:12,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [610200642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:12,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:12,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 41 [2022-11-18 19:59:12,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561306325] [2022-11-18 19:59:12,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:12,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 19:59:12,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:59:12,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 19:59:12,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1853, Unknown=43, NotChecked=270, Total=2352 [2022-11-18 19:59:12,892 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand has 42 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 33 states have internal predecessors, (59), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 19:59:22,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:22,917 INFO L93 Difference]: Finished difference Result 122 states and 121 transitions. [2022-11-18 19:59:22,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:59:22,918 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 33 states have internal predecessors, (59), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 41 [2022-11-18 19:59:22,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:22,919 INFO L225 Difference]: With dead ends: 122 [2022-11-18 19:59:22,919 INFO L226 Difference]: Without dead ends: 122 [2022-11-18 19:59:22,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 931 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=331, Invalid=3057, Unknown=46, NotChecked=348, Total=3782 [2022-11-18 19:59:22,921 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 193 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:22,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 677 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 820 Invalid, 0 Unknown, 305 Unchecked, 3.2s Time] [2022-11-18 19:59:22,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-18 19:59:22,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 86. [2022-11-18 19:59:22,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 58 states have (on average 1.3275862068965518) internal successors, (77), 76 states have internal predecessors, (77), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 19:59:22,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2022-11-18 19:59:22,926 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 41 [2022-11-18 19:59:22,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:22,926 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2022-11-18 19:59:22,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 1.5945945945945945) internal successors, (59), 33 states have internal predecessors, (59), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 19:59:22,926 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2022-11-18 19:59:22,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 19:59:22,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:22,927 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:22,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:23,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:23,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:23,328 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 19:59:23,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:23,328 INFO L85 PathProgramCache]: Analyzing trace with hash -678645917, now seen corresponding path program 1 times [2022-11-18 19:59:23,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:59:23,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084052685] [2022-11-18 19:59:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:23,329 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 [2022-11-18 19:59:23,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:59:23,330 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 19:59:23,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-18 19:59:23,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:23,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-18 19:59:23,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:23,596 INFO L350 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 [2022-11-18 19:59:23,794 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:59:23,794 INFO L350 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 [2022-11-18 19:59:23,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:59:24,066 INFO L350 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 7 treesize of output 5 [2022-11-18 19:59:32,296 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:59:32,296 INFO L350 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 [2022-11-18 19:59:32,508 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 19:59:32,508 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 39 [2022-11-18 19:59:32,523 INFO L350 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 27 treesize of output 29 [2022-11-18 19:59:32,872 INFO L350 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 24 treesize of output 16 [2022-11-18 19:59:33,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-11-18 19:59:39,670 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 19:59:39,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2022-11-18 19:59:39,694 INFO L350 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 16 treesize of output 12 [2022-11-18 19:59:39,944 INFO L350 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 15 [2022-11-18 19:59:40,044 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:40,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:42,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:59:42,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084052685] [2022-11-18 19:59:42,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084052685] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:59:42,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [439322343] [2022-11-18 19:59:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:42,539 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 19:59:42,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 19:59:42,543 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 19:59:42,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2022-11-18 19:59:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:42,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 19:59:42,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:42,921 INFO L350 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 [2022-11-18 19:59:43,397 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:59:43,397 INFO L350 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 [2022-11-18 19:59:43,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:59:43,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:59:44,005 INFO L350 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 7 treesize of output 5 [2022-11-18 20:00:00,427 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:00:00,427 INFO L350 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 [2022-11-18 20:00:00,773 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 20:00:00,774 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2022-11-18 20:00:00,784 INFO L350 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 27 treesize of output 29 [2022-11-18 20:00:01,755 INFO L350 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 24 treesize of output 16 [2022-11-18 20:00:02,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 5 [2022-11-18 20:00:12,927 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 20:00:12,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 46 treesize of output 51 [2022-11-18 20:00:12,943 INFO L350 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 16 treesize of output 12 [2022-11-18 20:00:13,359 INFO L350 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 15 [2022-11-18 20:00:13,366 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:13,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:13,409 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1102 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1102) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (_ bv1 1)))) is different from false [2022-11-18 20:00:13,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [439322343] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:00:13,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:00:13,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 38 [2022-11-18 20:00:13,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963655018] [2022-11-18 20:00:13,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:00:13,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 20:00:13,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:00:13,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 20:00:13,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1556, Unknown=21, NotChecked=80, Total=1806 [2022-11-18 20:00:13,451 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 39 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 33 states have internal predecessors, (59), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:00:24,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:24,952 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2022-11-18 20:00:24,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:00:24,953 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 33 states have internal predecessors, (59), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 41 [2022-11-18 20:00:24,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:24,954 INFO L225 Difference]: With dead ends: 94 [2022-11-18 20:00:24,954 INFO L226 Difference]: Without dead ends: 94 [2022-11-18 20:00:24,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 56.6s TimeCoverageRelationStatistics Valid=263, Invalid=2369, Unknown=24, NotChecked=100, Total=2756 [2022-11-18 20:00:24,956 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 104 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:24,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 712 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 734 Invalid, 0 Unknown, 135 Unchecked, 2.4s Time] [2022-11-18 20:00:24,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-18 20:00:24,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2022-11-18 20:00:24,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 75 states have internal predecessors, (76), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 20:00:24,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2022-11-18 20:00:24,960 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 41 [2022-11-18 20:00:24,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:24,960 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2022-11-18 20:00:24,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 33 states have internal predecessors, (59), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:00:24,960 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2022-11-18 20:00:24,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 20:00:24,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:24,961 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:24,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-18 20:00:25,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (50)] Forceful destruction successful, exit code 0 [2022-11-18 20:00:25,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 20:00:25,363 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 20:00:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:25,364 INFO L85 PathProgramCache]: Analyzing trace with hash -678645916, now seen corresponding path program 1 times [2022-11-18 20:00:25,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:00:25,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060007064] [2022-11-18 20:00:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:25,364 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 [2022-11-18 20:00:25,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:00:25,365 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:00:25,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-18 20:00:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:25,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-18 20:00:25,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:00:25,614 INFO L350 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 [2022-11-18 20:00:25,810 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:00:25,811 INFO L350 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 [2022-11-18 20:00:25,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:00:25,909 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:00:26,236 INFO L350 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 7 treesize of output 5 [2022-11-18 20:00:26,561 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:00:26,561 INFO L350 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 [2022-11-18 20:00:26,846 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 20:00:26,846 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 43 [2022-11-18 20:00:26,856 INFO L350 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 49 treesize of output 47 [2022-11-18 20:00:27,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 9 [2022-11-18 20:00:28,294 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 20:00:28,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 76 treesize of output 75 [2022-11-18 20:00:28,335 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:00:28,336 INFO L350 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 68 treesize of output 65 [2022-11-18 20:00:28,357 INFO L350 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 24 treesize of output 12 [2022-11-18 20:00:28,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-18 20:00:28,730 INFO L350 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 26 treesize of output 14 [2022-11-18 20:00:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:28,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:29,626 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1135 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1136 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1135) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1136) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) (forall ((v_ArrVal_1135 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1135) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) is different from false [2022-11-18 20:00:29,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:00:29,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060007064] [2022-11-18 20:00:29,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060007064] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:00:29,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1783861718] [2022-11-18 20:00:29,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:29,689 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:00:29,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:00:29,690 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:00:29,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (52)] Waiting until timeout for monitored process [2022-11-18 20:00:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:30,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 20:00:30,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:00:30,110 INFO L350 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 [2022-11-18 20:00:30,647 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:00:30,647 INFO L350 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 [2022-11-18 20:00:30,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:00:30,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:00:31,352 INFO L350 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 7 treesize of output 5 [2022-11-18 20:00:31,841 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:00:31,841 INFO L350 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 [2022-11-18 20:00:32,211 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 20:00:32,212 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 32 [2022-11-18 20:00:32,220 INFO L350 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 34 treesize of output 34 [2022-11-18 20:00:33,325 INFO L350 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 15 treesize of output 9 [2022-11-18 20:00:34,073 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 20:00:34,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 69 [2022-11-18 20:00:34,114 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:00:34,115 INFO L350 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 68 treesize of output 65 [2022-11-18 20:00:34,138 INFO L350 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 24 treesize of output 12 [2022-11-18 20:00:34,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-18 20:00:34,724 INFO L350 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 26 treesize of output 14 [2022-11-18 20:00:34,842 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:34,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:34,973 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1170 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1170) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((v_ArrVal_1169 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1170 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1170) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|) (_ bv4 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1169) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))))) is different from false [2022-11-18 20:00:35,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1783861718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:00:35,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:00:35,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 36 [2022-11-18 20:00:35,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133725049] [2022-11-18 20:00:35,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:00:35,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:00:35,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:00:35,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:00:35,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1438, Unknown=2, NotChecked=154, Total=1722 [2022-11-18 20:00:35,038 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 37 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 31 states have internal predecessors, (59), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:00:41,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:41,559 INFO L93 Difference]: Finished difference Result 120 states and 119 transitions. [2022-11-18 20:00:41,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:00:41,560 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 31 states have internal predecessors, (59), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 41 [2022-11-18 20:00:41,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:41,561 INFO L225 Difference]: With dead ends: 120 [2022-11-18 20:00:41,561 INFO L226 Difference]: Without dead ends: 120 [2022-11-18 20:00:41,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=272, Invalid=2490, Unknown=2, NotChecked=206, Total=2970 [2022-11-18 20:00:41,563 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 244 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 206 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:41,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1266 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1144 Invalid, 0 Unknown, 206 Unchecked, 4.1s Time] [2022-11-18 20:00:41,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-18 20:00:41,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 77. [2022-11-18 20:00:41,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 68 states have internal predecessors, (69), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 20:00:41,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2022-11-18 20:00:41,566 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 41 [2022-11-18 20:00:41,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:41,566 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2022-11-18 20:00:41,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 1.7352941176470589) internal successors, (59), 31 states have internal predecessors, (59), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:00:41,567 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2022-11-18 20:00:41,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:00:41,567 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:41,567 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:00:41,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (52)] Forceful destruction successful, exit code 0 [2022-11-18 20:00:41,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-18 20:00:41,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:00:41,968 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 20:00:41,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:41,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2050699743, now seen corresponding path program 1 times [2022-11-18 20:00:41,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:00:41,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102534702] [2022-11-18 20:00:41,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:41,969 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 [2022-11-18 20:00:41,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:00:41,971 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:00:41,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-18 20:00:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:42,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-18 20:00:42,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:00:42,259 INFO L350 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 [2022-11-18 20:00:42,455 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:00:42,455 INFO L350 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 [2022-11-18 20:00:42,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:00:42,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:00:42,813 INFO L350 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 7 treesize of output 5 [2022-11-18 20:00:43,134 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:00:43,134 INFO L350 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 [2022-11-18 20:00:43,406 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 20:00:43,406 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 41 [2022-11-18 20:00:43,415 INFO L350 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 37 [2022-11-18 20:00:44,400 INFO L350 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 [2022-11-18 20:00:45,092 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-18 20:00:45,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 124 treesize of output 79 [2022-11-18 20:00:45,171 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-18 20:00:45,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 76 [2022-11-18 20:00:45,303 INFO L350 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 31 treesize of output 19 [2022-11-18 20:00:45,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 88 [2022-11-18 20:00:47,281 INFO L321 Elim1Store]: treesize reduction 40, result has 74.5 percent of original size [2022-11-18 20:00:47,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 113 treesize of output 178 [2022-11-18 20:00:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:00:49,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:50,115 INFO L321 Elim1Store]: treesize reduction 7, result has 82.9 percent of original size [2022-11-18 20:00:50,115 INFO L350 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 126 treesize of output 125 [2022-11-18 20:00:50,153 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1209 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_alloc_10_#t~ret40#1.base_52| (_ BitVec 32))) (let ((.cse0 (select (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_52|)))) (select .cse1 (select (select .cse1 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1209) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) (or (= .cse0 |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_52|) (= |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| .cse0)))) is different from false [2022-11-18 20:00:50,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:00:50,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102534702] [2022-11-18 20:00:50,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102534702] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:00:50,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [138539067] [2022-11-18 20:00:50,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:50,158 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:00:50,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:00:50,159 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:00:50,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2022-11-18 20:00:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:00:50,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-18 20:00:50,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:00:50,644 INFO L350 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 [2022-11-18 20:00:53,449 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:00:53,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 20:00:53,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:00:53,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:00:54,326 INFO L350 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 20:00:56,936 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 20:00:56,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 20:00:57,400 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 20:00:57,400 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 36 [2022-11-18 20:00:57,410 INFO L350 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 54 treesize of output 52 [2022-11-18 20:00:59,631 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 20:00:59,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 92 treesize of output 77 [2022-11-18 20:00:59,676 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 20:00:59,677 INFO L350 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 81 treesize of output 78 [2022-11-18 20:01:00,355 INFO L350 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 70 treesize of output 50 [2022-11-18 20:01:00,717 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:01:00,717 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 26 [2022-11-18 20:01:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:00,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:00,794 INFO L321 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2022-11-18 20:01:00,795 INFO L350 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 37 treesize of output 36 [2022-11-18 20:01:00,811 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1246 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1247))) (select .cse0 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1246) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) is different from false [2022-11-18 20:01:00,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [138539067] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:01:00,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:00,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 41 [2022-11-18 20:01:00,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519097959] [2022-11-18 20:01:00,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:00,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:01:00,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:01:00,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:01:00,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1927, Unknown=4, NotChecked=178, Total=2256 [2022-11-18 20:01:00,831 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 42 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 35 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:01:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:01:13,612 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2022-11-18 20:01:13,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:01:13,613 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 35 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 42 [2022-11-18 20:01:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:01:13,614 INFO L225 Difference]: With dead ends: 83 [2022-11-18 20:01:13,614 INFO L226 Difference]: Without dead ends: 83 [2022-11-18 20:01:13,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=366, Invalid=3798, Unknown=4, NotChecked=254, Total=4422 [2022-11-18 20:01:13,615 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 70 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 289 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:01:13,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 924 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 796 Invalid, 0 Unknown, 289 Unchecked, 2.9s Time] [2022-11-18 20:01:13,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-18 20:01:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 76. [2022-11-18 20:01:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 67 states have internal predecessors, (68), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 20:01:13,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2022-11-18 20:01:13,617 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 42 [2022-11-18 20:01:13,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:01:13,618 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2022-11-18 20:01:13,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 35 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:01:13,618 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2022-11-18 20:01:13,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:01:13,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:01:13,619 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:01:13,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:13,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (54)] Forceful destruction successful, exit code 0 [2022-11-18 20:01:14,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 20:01:14,031 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 20:01:14,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:01:14,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2050699742, now seen corresponding path program 1 times [2022-11-18 20:01:14,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:01:14,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171570118] [2022-11-18 20:01:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:14,032 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 [2022-11-18 20:01:14,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:01:14,033 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:01:14,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-18 20:01:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:14,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-18 20:01:14,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:14,333 INFO L350 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 [2022-11-18 20:01:14,560 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:01:14,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 20:01:14,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:01:14,663 INFO L350 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 6 treesize of output 5 [2022-11-18 20:01:14,911 INFO L350 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 20:01:21,089 INFO L350 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 [2022-11-18 20:01:23,416 INFO L321 Elim1Store]: treesize reduction 56, result has 35.6 percent of original size [2022-11-18 20:01:23,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 51 [2022-11-18 20:01:23,828 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 20:01:23,829 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 52 [2022-11-18 20:01:23,845 INFO L350 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 78 [2022-11-18 20:01:25,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2022-11-18 20:01:25,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 16 [2022-11-18 20:01:27,781 INFO L321 Elim1Store]: treesize reduction 18, result has 61.7 percent of original size [2022-11-18 20:01:27,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 47 [2022-11-18 20:01:27,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 20:01:28,144 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 20:01:28,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 94 [2022-11-18 20:01:28,221 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-18 20:01:28,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 87 treesize of output 87 [2022-11-18 20:01:28,861 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-18 20:01:28,861 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 46 [2022-11-18 20:01:28,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 10 [2022-11-18 20:01:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:29,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:30,155 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1287 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1287))) (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1286) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (select (select .cse1 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_1287 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1287)) (.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1286))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select .cse2 .cse3) .cse4)) (select |c_#length| (select (select .cse5 .cse3) .cse4))))))) is different from false [2022-11-18 20:01:30,376 WARN L837 $PredicateComparison]: unable to prove that (and (or (forall ((|v_ldv_malloc_#res.base_199| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_199|)))) (forall ((v_ArrVal_1287 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1287))) (select (select .cse1 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1286) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (select (select .cse1 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) (forall ((|v_ldv_malloc_#res.base_199| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_199|))) (forall ((v_ArrVal_1287 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1290 (_ BitVec 32)) (v_ArrVal_1286 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1287)) (.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1286))) (let ((.cse3 (select (select .cse5 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse4 (select (select .cse2 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (bvule (bvadd (_ bv4 32) (select (select .cse2 .cse3) .cse4)) (select (store |c_#length| |v_ldv_malloc_#res.base_199| v_ArrVal_1290) (select (select .cse5 .cse3) .cse4))))))))) is different from false [2022-11-18 20:01:30,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:01:30,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171570118] [2022-11-18 20:01:30,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171570118] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:01:30,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2032195233] [2022-11-18 20:01:30,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:01:30,391 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:01:30,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:01:30,395 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:01:30,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2022-11-18 20:01:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:01:30,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-18 20:01:30,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:01:30,989 INFO L350 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 [2022-11-18 20:01:31,762 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:01:31,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 20:01:31,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:01:32,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:01:32,637 INFO L350 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 20:01:37,282 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 20:01:37,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 20:01:37,755 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 20:01:37,755 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 45 [2022-11-18 20:01:37,764 INFO L350 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 53 [2022-11-18 20:01:40,176 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 20:01:40,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 100 [2022-11-18 20:01:40,260 INFO L321 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2022-11-18 20:01:40,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 108 treesize of output 98 [2022-11-18 20:01:41,669 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:01:41,670 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 56 [2022-11-18 20:01:41,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 20 [2022-11-18 20:01:41,922 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:01:41,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:01:42,119 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:01:42,119 INFO L350 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 106 treesize of output 110 [2022-11-18 20:01:42,370 WARN L837 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_31 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_32 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_prenex_32)) (.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_prenex_31))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse2 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (or (= (bvadd (_ bv4 32) (select (select .cse0 .cse1) .cse2)) (_ bv0 32)) (= |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (select (select .cse3 .cse1) .cse2)))))) (forall ((v_prenex_31 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_32 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (let ((.cse4 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_prenex_32))) (select (select .cse4 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_prenex_31) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (select (select .cse4 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)))) (bvadd |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| (_ bv4 32)))) (forall ((v_ArrVal_1328 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1327 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1327))) (select (select .cse6 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1328) |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (select (select .cse6 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))))) (bvule .cse5 (bvadd (_ bv4 32) .cse5))))) is different from false [2022-11-18 20:01:42,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2032195233] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:01:42,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:01:42,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 43 [2022-11-18 20:01:42,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576695385] [2022-11-18 20:01:42,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:01:42,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 20:01:42,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:01:42,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 20:01:42,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2057, Unknown=34, NotChecked=282, Total=2550 [2022-11-18 20:01:42,429 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand has 44 states, 40 states have (on average 1.6) internal successors, (64), 36 states have internal predecessors, (64), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:02:00,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:02:00,960 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2022-11-18 20:02:00,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 20:02:00,961 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 40 states have (on average 1.6) internal successors, (64), 36 states have internal predecessors, (64), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 42 [2022-11-18 20:02:00,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:02:00,963 INFO L225 Difference]: With dead ends: 89 [2022-11-18 20:02:00,964 INFO L226 Difference]: Without dead ends: 89 [2022-11-18 20:02:00,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=402, Invalid=3987, Unknown=45, NotChecked=396, Total=4830 [2022-11-18 20:02:00,970 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 74 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 222 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:02:00,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1000 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 943 Invalid, 0 Unknown, 222 Unchecked, 3.5s Time] [2022-11-18 20:02:00,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-18 20:02:00,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 75. [2022-11-18 20:02:00,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 66 states have internal predecessors, (67), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 20:02:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2022-11-18 20:02:00,975 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 42 [2022-11-18 20:02:00,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:02:00,976 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2022-11-18 20:02:00,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 40 states have (on average 1.6) internal successors, (64), 36 states have internal predecessors, (64), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:02:00,977 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2022-11-18 20:02:00,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:02:00,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:02:00,978 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:02:00,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:01,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (56)] Forceful destruction successful, exit code 0 [2022-11-18 20:02:01,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 20:02:01,391 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 20:02:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:02:01,392 INFO L85 PathProgramCache]: Analyzing trace with hash 852817446, now seen corresponding path program 1 times [2022-11-18 20:02:01,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:02:01,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730490007] [2022-11-18 20:02:01,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:01,392 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 [2022-11-18 20:02:01,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:02:01,393 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:02:01,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-18 20:02:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:01,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-18 20:02:01,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:01,732 INFO L350 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 [2022-11-18 20:02:01,975 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:02:01,975 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 20:02:02,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:02:02,081 INFO L350 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 6 treesize of output 5 [2022-11-18 20:02:02,377 INFO L350 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 20:02:10,650 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 20:02:10,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 20:02:10,907 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 20:02:10,907 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 36 [2022-11-18 20:02:10,915 INFO L350 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 47 treesize of output 47 [2022-11-18 20:02:12,824 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 20:02:12,824 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 91 [2022-11-18 20:02:12,913 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-18 20:02:12,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 71 [2022-11-18 20:02:13,541 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-18 20:02:13,542 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 45 [2022-11-18 20:02:15,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-18 20:02:15,977 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:15,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:18,837 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1365 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |c_ULTIMATE.start_alloc_10_#t~ret40#1.offset|))) (.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1365))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse3 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse1 .cse2) .cse3)) (select (select .cse0 .cse2) .cse3)))) (_ bv0 32))) is different from false [2022-11-18 20:02:18,891 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1365 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| (_ bv0 32)))) (.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1365))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse3 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse1 .cse2) .cse3)) (select (select .cse0 .cse2) .cse3)))) (_ bv0 32))) is different from false [2022-11-18 20:02:18,896 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:02:18,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730490007] [2022-11-18 20:02:18,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730490007] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:02:18,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [319661549] [2022-11-18 20:02:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:02:18,897 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:02:18,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:02:18,898 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:02:18,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (58)] Waiting until timeout for monitored process [2022-11-18 20:02:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:02:19,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-18 20:02:19,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:02:19,365 INFO L350 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 [2022-11-18 20:02:19,953 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:02:19,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 20:02:20,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:02:20,184 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:02:22,779 INFO L350 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 20:02:35,277 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 20:02:35,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 20:02:35,802 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 20:02:35,802 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 45 [2022-11-18 20:02:35,816 INFO L350 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 50 [2022-11-18 20:02:45,668 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 20:02:45,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 91 [2022-11-18 20:02:45,768 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-18 20:02:45,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 71 [2022-11-18 20:02:47,053 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-18 20:02:47,054 INFO L350 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 45 [2022-11-18 20:02:51,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-18 20:02:51,544 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:02:51,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:02:51,612 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1402 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |c_ULTIMATE.start_alloc_10_#t~ret40#1.offset|))) (.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1402))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse3 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse1 .cse2) .cse3)) (select (select .cse0 .cse2) .cse3)))) (_ bv0 32))) is different from false [2022-11-18 20:02:51,668 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1402 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse0 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| (_ bv0 32)))) (.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1402))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse3 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse1 .cse2) .cse3)) (select (select .cse0 .cse2) .cse3)))) (_ bv0 32))) is different from false [2022-11-18 20:02:51,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [319661549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:02:51,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:02:51,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 44 [2022-11-18 20:02:51,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656142637] [2022-11-18 20:02:51,674 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:02:51,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-18 20:02:51,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:02:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-18 20:02:51,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2159, Unknown=18, NotChecked=388, Total=2756 [2022-11-18 20:02:51,676 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand has 45 states, 40 states have (on average 1.575) internal successors, (63), 37 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:03:06,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:03:06,449 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2022-11-18 20:03:06,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:03:06,450 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 1.575) internal successors, (63), 37 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 43 [2022-11-18 20:03:06,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:03:06,451 INFO L225 Difference]: With dead ends: 84 [2022-11-18 20:03:06,451 INFO L226 Difference]: Without dead ends: 84 [2022-11-18 20:03:06,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 64 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 58.6s TimeCoverageRelationStatistics Valid=333, Invalid=3444, Unknown=21, NotChecked=492, Total=4290 [2022-11-18 20:03:06,452 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 55 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 275 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:03:06,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 919 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 662 Invalid, 0 Unknown, 275 Unchecked, 2.4s Time] [2022-11-18 20:03:06,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-18 20:03:06,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-18 20:03:06,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 60 states have (on average 1.25) internal successors, (75), 74 states have internal predecessors, (75), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 20:03:06,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2022-11-18 20:03:06,454 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 43 [2022-11-18 20:03:06,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:03:06,455 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2022-11-18 20:03:06,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 1.575) internal successors, (63), 37 states have internal predecessors, (63), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:03:06,455 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2022-11-18 20:03:06,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:03:06,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:03:06,456 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:03:06,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:06,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (58)] Forceful destruction successful, exit code 0 [2022-11-18 20:03:06,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 20:03:06,879 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 20:03:06,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:03:06,880 INFO L85 PathProgramCache]: Analyzing trace with hash 656303941, now seen corresponding path program 1 times [2022-11-18 20:03:06,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:03:06,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500247734] [2022-11-18 20:03:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:03:06,880 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 [2022-11-18 20:03:06,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:03:06,882 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:03:06,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-18 20:03:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:03:07,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-18 20:03:07,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:03:07,391 INFO L350 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 12 treesize of output 18 [2022-11-18 20:03:07,700 INFO L321 Elim1Store]: treesize reduction 32, result has 27.3 percent of original size [2022-11-18 20:03:07,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 37 [2022-11-18 20:03:07,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:03:07,840 INFO L350 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 11 treesize of output 7 [2022-11-18 20:03:08,241 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:03:08,241 INFO L350 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 [2022-11-18 20:03:08,808 INFO L321 Elim1Store]: treesize reduction 32, result has 27.3 percent of original size [2022-11-18 20:03:08,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 37 [2022-11-18 20:03:09,155 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 20:03:09,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 45 [2022-11-18 20:03:09,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 49 [2022-11-18 20:03:10,367 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:03:10,368 INFO L350 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 [2022-11-18 20:03:11,650 INFO L321 Elim1Store]: treesize reduction 119, result has 15.6 percent of original size [2022-11-18 20:03:11,650 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 146 treesize of output 88 [2022-11-18 20:03:11,750 INFO L321 Elim1Store]: treesize reduction 80, result has 22.3 percent of original size [2022-11-18 20:03:11,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 56 [2022-11-18 20:03:14,271 INFO L321 Elim1Store]: treesize reduction 52, result has 71.3 percent of original size [2022-11-18 20:03:14,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 11 new quantified variables, introduced 15 case distinctions, treesize of input 210 treesize of output 269 [2022-11-18 20:03:52,161 INFO L321 Elim1Store]: treesize reduction 206, result has 35.8 percent of original size [2022-11-18 20:03:52,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 11 new quantified variables, introduced 28 case distinctions, treesize of input 117 treesize of output 192 [2022-11-18 20:03:52,469 INFO L321 Elim1Store]: treesize reduction 22, result has 63.9 percent of original size [2022-11-18 20:03:52,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 78 treesize of output 108 [2022-11-18 20:03:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:03:54,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:34,512 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:04:34,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500247734] [2022-11-18 20:04:34,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500247734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:04:34,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1534921515] [2022-11-18 20:04:34,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:34,513 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:04:34,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:04:34,515 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:04:34,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2022-11-18 20:04:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:34,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-18 20:04:34,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:04:34,941 INFO L350 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 [2022-11-18 20:04:36,232 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:04:36,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 20:04:36,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:04:36,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:04:37,638 INFO L350 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 20:04:38,420 INFO L350 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 [2022-11-18 20:04:39,114 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 20:04:39,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 20:04:39,763 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 20:04:39,763 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 45 [2022-11-18 20:04:39,773 INFO L350 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 66 [2022-11-18 20:04:42,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 3 [2022-11-18 20:04:44,539 INFO L321 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2022-11-18 20:04:44,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 93 [2022-11-18 20:04:44,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:04:44,683 INFO L321 Elim1Store]: treesize reduction 112, result has 16.4 percent of original size [2022-11-18 20:04:44,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 66 treesize of output 52 [2022-11-18 20:04:46,732 INFO L321 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-11-18 20:04:46,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 118 treesize of output 64 [2022-11-18 20:04:47,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 31 [2022-11-18 20:04:47,322 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:47,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:04:51,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1534921515] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:04:51,894 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:04:51,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25] total 47 [2022-11-18 20:04:51,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562610127] [2022-11-18 20:04:51,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:04:51,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-18 20:04:51,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:04:51,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-18 20:04:51,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=4161, Unknown=20, NotChecked=0, Total=4422 [2022-11-18 20:04:51,897 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand has 48 states, 43 states have (on average 1.558139534883721) internal successors, (67), 39 states have internal predecessors, (67), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:05:10,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:05:10,616 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2022-11-18 20:05:10,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:05:10,616 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 43 states have (on average 1.558139534883721) internal successors, (67), 39 states have internal predecessors, (67), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 43 [2022-11-18 20:05:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:05:10,617 INFO L225 Difference]: With dead ends: 86 [2022-11-18 20:05:10,617 INFO L226 Difference]: Without dead ends: 86 [2022-11-18 20:05:10,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2531 ImplicationChecksByTransitivity, 76.5s TimeCoverageRelationStatistics Valid=592, Invalid=8129, Unknown=21, NotChecked=0, Total=8742 [2022-11-18 20:05:10,619 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 106 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 394 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:05:10,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 821 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 554 Invalid, 0 Unknown, 394 Unchecked, 2.4s Time] [2022-11-18 20:05:10,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-18 20:05:10,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 74. [2022-11-18 20:05:10,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 65 states have internal predecessors, (66), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 20:05:10,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2022-11-18 20:05:10,622 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 43 [2022-11-18 20:05:10,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:05:10,622 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2022-11-18 20:05:10,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 43 states have (on average 1.558139534883721) internal successors, (67), 39 states have internal predecessors, (67), 8 states have call successors, (8), 6 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:05:10,623 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2022-11-18 20:05:10,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 20:05:10,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:05:10,624 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:10,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:10,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (60)] Ended with exit code 0 [2022-11-18 20:05:11,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 20:05:11,039 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 20:05:11,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:11,039 INFO L85 PathProgramCache]: Analyzing trace with hash 667537153, now seen corresponding path program 1 times [2022-11-18 20:05:11,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:05:11,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26012746] [2022-11-18 20:05:11,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:11,040 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 [2022-11-18 20:05:11,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:05:11,041 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:05:11,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-18 20:05:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:11,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-18 20:05:11,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:11,338 INFO L350 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 [2022-11-18 20:05:11,602 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:05:11,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 20:05:11,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:05:11,720 INFO L350 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 6 treesize of output 5 [2022-11-18 20:05:12,009 INFO L350 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 20:05:18,326 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 20:05:18,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 20:05:18,642 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 20:05:18,642 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 45 [2022-11-18 20:05:18,651 INFO L350 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 50 [2022-11-18 20:05:20,784 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-11-18 20:05:20,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 72 [2022-11-18 20:05:20,876 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-18 20:05:20,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 101 treesize of output 93 [2022-11-18 20:05:21,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 64 [2022-11-18 20:05:22,061 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 20:05:22,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 25 [2022-11-18 20:05:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:22,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:23,089 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1520 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1520)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |c_ULTIMATE.start_alloc_10_#t~ret40#1.base|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))) |c_#StackHeapBarrier|)) is different from false [2022-11-18 20:05:23,164 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1520 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_alloc_10_#t~ret40#1.base_77| (_ BitVec 32))) (bvule (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1520)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_77|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))) |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_77|)) is different from false [2022-11-18 20:05:23,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:05:23,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26012746] [2022-11-18 20:05:23,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26012746] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:23,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [470590582] [2022-11-18 20:05:23,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:23,170 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:05:23,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:05:23,171 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:05:23,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (62)] Waiting until timeout for monitored process [2022-11-18 20:05:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:05:23,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-18 20:05:23,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:05:23,619 INFO L350 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 [2022-11-18 20:05:24,408 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:05:24,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 20:05:24,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:05:24,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:05:25,321 INFO L350 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 20:05:35,921 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 20:05:35,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 20:05:36,392 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 20:05:36,393 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 45 [2022-11-18 20:05:36,402 INFO L350 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 50 [2022-11-18 20:05:39,921 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-11-18 20:05:39,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 125 treesize of output 72 [2022-11-18 20:05:40,018 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-18 20:05:40,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 101 treesize of output 93 [2022-11-18 20:05:41,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 64 [2022-11-18 20:05:41,953 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-11-18 20:05:41,953 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 25 [2022-11-18 20:05:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:05:41,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:05:43,696 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_alloc_10_#t~ret40#1.base_80| (_ BitVec 32)) (v_ArrVal_1560 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1560)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_80|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))) |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_80|)) is different from false [2022-11-18 20:05:43,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [470590582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:05:43,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:05:43,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 45 [2022-11-18 20:05:43,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875294517] [2022-11-18 20:05:43,702 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:05:43,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:05:43,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:05:43,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:05:43,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=2331, Unknown=34, NotChecked=300, Total=2862 [2022-11-18 20:05:43,703 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 46 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 38 states have internal predecessors, (64), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:05:59,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:05:59,279 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2022-11-18 20:05:59,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:05:59,279 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 38 states have internal predecessors, (64), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 44 [2022-11-18 20:05:59,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:05:59,280 INFO L225 Difference]: With dead ends: 84 [2022-11-18 20:05:59,280 INFO L226 Difference]: Without dead ends: 84 [2022-11-18 20:05:59,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 41.0s TimeCoverageRelationStatistics Valid=354, Invalid=3780, Unknown=38, NotChecked=384, Total=4556 [2022-11-18 20:05:59,281 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 61 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:05:59,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 681 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 540 Invalid, 0 Unknown, 204 Unchecked, 2.3s Time] [2022-11-18 20:05:59,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-18 20:05:59,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-18 20:05:59,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 74 states have internal predecessors, (75), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-18 20:05:59,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2022-11-18 20:05:59,284 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 44 [2022-11-18 20:05:59,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:05:59,284 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2022-11-18 20:05:59,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 38 states have internal predecessors, (64), 7 states have call successors, (7), 6 states have call predecessors, (7), 7 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-18 20:05:59,284 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2022-11-18 20:05:59,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 20:05:59,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:05:59,285 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:05:59,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:59,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (62)] Forceful destruction successful, exit code 0 [2022-11-18 20:05:59,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 20:05:59,686 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 20:05:59,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:05:59,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1129414206, now seen corresponding path program 1 times [2022-11-18 20:05:59,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:05:59,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1734786824] [2022-11-18 20:05:59,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:05:59,686 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 [2022-11-18 20:05:59,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:05:59,687 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:05:59,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2022-11-18 20:05:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:00,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-18 20:06:00,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:00,361 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:06:00,362 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 37 [2022-11-18 20:06:00,718 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:06:00,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-11-18 20:06:01,199 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-18 20:06:01,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 53 [2022-11-18 20:06:01,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:06:01,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:06:02,354 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:06:02,354 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-11-18 20:06:03,169 INFO L321 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-18 20:06:03,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 53 [2022-11-18 20:06:03,854 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 20:06:03,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 49 [2022-11-18 20:06:03,874 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 61 [2022-11-18 20:06:05,950 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 20:06:05,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2022-11-18 20:06:07,789 INFO L321 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2022-11-18 20:06:07,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 153 treesize of output 88 [2022-11-18 20:06:07,883 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-18 20:06:07,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 72 [2022-11-18 20:06:08,041 INFO L350 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 27 treesize of output 15 [2022-11-18 20:06:10,278 INFO L321 Elim1Store]: treesize reduction 12, result has 85.9 percent of original size [2022-11-18 20:06:10,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 218 treesize of output 237 [2022-11-18 20:06:27,015 INFO L321 Elim1Store]: treesize reduction 85, result has 49.7 percent of original size [2022-11-18 20:06:27,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 15 case distinctions, treesize of input 162 treesize of output 174 [2022-11-18 20:06:27,481 INFO L321 Elim1Store]: treesize reduction 42, result has 53.8 percent of original size [2022-11-18 20:06:27,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 98 treesize of output 136 [2022-11-18 20:06:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:28,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:30,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:06:30,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1734786824] [2022-11-18 20:06:30,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1734786824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:30,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1697070723] [2022-11-18 20:06:30,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:30,061 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:06:30,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:06:30,063 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:06:30,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (64)] Waiting until timeout for monitored process [2022-11-18 20:06:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:30,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-18 20:06:30,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:06:31,287 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:06:31,288 INFO L350 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 [2022-11-18 20:06:31,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-18 20:06:32,638 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2022-11-18 20:06:32,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2022-11-18 20:06:33,167 INFO L350 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 11 treesize of output 7 [2022-11-18 20:06:33,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:06:34,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 16 [2022-11-18 20:06:35,049 INFO L350 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 [2022-11-18 20:06:35,615 INFO L321 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2022-11-18 20:06:35,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 31 treesize of output 35 [2022-11-18 20:06:36,515 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 20:06:36,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 49 [2022-11-18 20:06:36,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 78 [2022-11-18 20:06:39,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 3 [2022-11-18 20:06:41,661 INFO L321 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2022-11-18 20:06:41,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 81 [2022-11-18 20:06:41,774 INFO L321 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2022-11-18 20:06:41,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 141 treesize of output 127 [2022-11-18 20:06:43,752 INFO L321 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2022-11-18 20:06:43,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 92 [2022-11-18 20:06:44,330 INFO L321 Elim1Store]: treesize reduction 21, result has 16.0 percent of original size [2022-11-18 20:06:44,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 43 [2022-11-18 20:06:44,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:06:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:06:44,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:06:48,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1697070723] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:06:48,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:06:48,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 49 [2022-11-18 20:06:48,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108019789] [2022-11-18 20:06:48,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:06:48,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-18 20:06:48,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:06:48,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-18 20:06:48,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=3776, Unknown=14, NotChecked=0, Total=4032 [2022-11-18 20:06:48,487 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand has 51 states, 46 states have (on average 1.5) internal successors, (69), 41 states have internal predecessors, (69), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:07:15,042 WARN L233 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 187 DAG size of output: 162 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:07:20,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:07:20,629 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2022-11-18 20:07:20,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:07:20,630 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 46 states have (on average 1.5) internal successors, (69), 41 states have internal predecessors, (69), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 44 [2022-11-18 20:07:20,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:07:20,631 INFO L225 Difference]: With dead ends: 83 [2022-11-18 20:07:20,631 INFO L226 Difference]: Without dead ends: 83 [2022-11-18 20:07:20,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 50.5s TimeCoverageRelationStatistics Valid=671, Invalid=7871, Unknown=14, NotChecked=0, Total=8556 [2022-11-18 20:07:20,633 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 101 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 1283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 438 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:07:20,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 812 Invalid, 1283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 819 Invalid, 0 Unknown, 438 Unchecked, 3.8s Time] [2022-11-18 20:07:20,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-18 20:07:20,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2022-11-18 20:07:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 52 states have (on average 1.25) internal successors, (65), 64 states have internal predecessors, (65), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-18 20:07:20,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 73 transitions. [2022-11-18 20:07:20,637 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 73 transitions. Word has length 44 [2022-11-18 20:07:20,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:07:20,638 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 73 transitions. [2022-11-18 20:07:20,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 46 states have (on average 1.5) internal successors, (69), 41 states have internal predecessors, (69), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:07:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 73 transitions. [2022-11-18 20:07:20,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:07:20,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:07:20,639 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:07:20,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:20,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (64)] Forceful destruction successful, exit code 0 [2022-11-18 20:07:21,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt [2022-11-18 20:07:21,054 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-18 20:07:21,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:21,055 INFO L85 PathProgramCache]: Analyzing trace with hash -781184632, now seen corresponding path program 1 times [2022-11-18 20:07:21,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:07:21,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135092966] [2022-11-18 20:07:21,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:21,055 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 [2022-11-18 20:07:21,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:07:21,056 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -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) [2022-11-18 20:07:21,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-18 20:07:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:21,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-18 20:07:21,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:21,385 INFO L350 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 [2022-11-18 20:07:21,650 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 20:07:21,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 20:07:21,744 INFO L350 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 6 treesize of output 5 [2022-11-18 20:07:21,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 20:07:22,049 INFO L350 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 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 20:07:30,314 INFO L321 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2022-11-18 20:07:30,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2022-11-18 20:07:30,574 INFO L321 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2022-11-18 20:07:30,574 INFO L350 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 36 [2022-11-18 20:07:30,589 INFO L350 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 47 treesize of output 47 [2022-11-18 20:07:31,545 INFO L350 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 [2022-11-18 20:07:32,172 INFO L321 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2022-11-18 20:07:32,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 61 [2022-11-18 20:07:32,257 INFO L321 Elim1Store]: treesize reduction 40, result has 27.3 percent of original size [2022-11-18 20:07:32,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 90 treesize of output 90 [2022-11-18 20:07:32,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 65 [2022-11-18 20:07:33,155 INFO L321 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2022-11-18 20:07:33,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 29 [2022-11-18 20:07:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:07:33,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:07:34,571 INFO L350 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 223 treesize of output 152 [2022-11-18 20:07:34,597 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1674 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_alloc_10_#t~ret40#1.base_89| (_ BitVec 32))) (= |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_89| (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| v_ArrVal_1674)) (.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_alloc_10_#t~mem39#1.base|) |c_ULTIMATE.start_alloc_10_#t~mem39#1.offset| |v_ULTIMATE.start_alloc_10_#t~ret40#1.base_89|)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|)) (.cse2 (select (select .cse3 |c_ULTIMATE.start_entry_point_~a10~0#1.base|) |c_ULTIMATE.start_entry_point_~a10~0#1.offset|))) (select (select .cse0 (select (select .cse0 .cse1) .cse2)) (select (select .cse3 .cse1) .cse2)))))) is different from false [2022-11-18 20:07:34,602 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:07:34,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135092966] [2022-11-18 20:07:34,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135092966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:07:34,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [629021573] [2022-11-18 20:07:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:34,603 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-18 20:07:34,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 [2022-11-18 20:07:34,604 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-18 20:07:34,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51e796a-a911-41b4-840b-90059e53ad66/bin/uautomizer-TMbwUNV5ro/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2022-11-18 20:07:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:35,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-18 20:07:35,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:07:35,079 INFO L350 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