./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f 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_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8 --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 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f --- 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-e04fb08 [2022-11-16 11:21:18,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:21:18,612 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:21:18,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:21:18,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:21:18,643 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:21:18,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:21:18,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:21:18,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:21:18,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:21:18,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:21:18,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:21:18,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:21:18,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:21:18,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:21:18,659 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:21:18,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:21:18,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:21:18,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:21:18,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:21:18,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:21:18,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:21:18,678 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:21:18,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:21:18,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:21:18,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:21:18,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:21:18,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:21:18,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:21:18,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:21:18,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:21:18,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:21:18,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:21:18,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:21:18,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:21:18,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:21:18,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:21:18,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:21:18,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:21:18,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:21:18,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:21:18,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:21:18,753 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:21:18,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:21:18,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:21:18,758 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:21:18,759 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:21:18,759 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:21:18,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:21:18,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:21:18,761 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:21:18,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:21:18,762 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:21:18,763 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:21:18,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:21:18,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:21:18,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:21:18,764 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:21:18,764 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:21:18,764 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:21:18,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:21:18,765 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:21:18,765 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:21:18,765 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:21:18,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:21:18,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:21:18,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:21:18,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:21:18,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:21:18,769 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:21:18,769 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:21:18,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:21:18,770 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_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f [2022-11-16 11:21:19,084 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:21:19,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:21:19,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:21:19,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:21:19,120 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:21:19,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2022-11-16 11:21:19,202 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/data/519bfc6f5/d93eadf996204d499c957872ff3007f9/FLAG6c0d72c01 [2022-11-16 11:21:19,989 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:21:19,990 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2022-11-16 11:21:20,006 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/data/519bfc6f5/d93eadf996204d499c957872ff3007f9/FLAG6c0d72c01 [2022-11-16 11:21:20,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/data/519bfc6f5/d93eadf996204d499c957872ff3007f9 [2022-11-16 11:21:20,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:21:20,026 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:21:20,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:21:20,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:21:20,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:21:20,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:21:20" (1/1) ... [2022-11-16 11:21:20,035 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@417f338f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:20, skipping insertion in model container [2022-11-16 11:21:20,035 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:21:20" (1/1) ... [2022-11-16 11:21:20,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:21:20,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:21:20,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:21:20,582 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) [2022-11-16 11:21:20,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f4703f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:20, skipping insertion in model container [2022-11-16 11:21:20,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:21:20,585 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 11:21:20,589 INFO L158 Benchmark]: Toolchain (without parser) took 560.10ms. Allocated memory is still 134.2MB. Free memory was 102.6MB in the beginning and 105.8MB in the end (delta: -3.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 11:21:20,590 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:21:20,592 INFO L158 Benchmark]: CACSL2BoogieTranslator took 556.90ms. Allocated memory is still 134.2MB. Free memory was 102.1MB in the beginning and 105.8MB in the end (delta: -3.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 11:21:20,594 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 92.3MB. Free memory is still 47.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 556.90ms. Allocated memory is still 134.2MB. Free memory was 102.1MB in the beginning and 105.8MB in the end (delta: -3.6MB). Peak memory consumption was 6.3MB. 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_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8 --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 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f --- 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-e04fb08 [2022-11-16 11:21:23,166 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:21:23,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:21:23,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:21:23,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:21:23,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:21:23,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:21:23,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:21:23,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:21:23,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:21:23,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:21:23,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:21:23,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:21:23,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:21:23,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:21:23,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:21:23,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:21:23,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:21:23,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:21:23,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:21:23,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:21:23,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:21:23,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:21:23,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:21:23,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:21:23,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:21:23,288 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:21:23,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:21:23,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:21:23,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:21:23,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:21:23,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:21:23,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:21:23,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:21:23,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:21:23,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:21:23,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:21:23,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:21:23,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:21:23,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:21:23,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:21:23,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 11:21:23,367 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:21:23,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:21:23,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:21:23,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:21:23,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:21:23,371 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:21:23,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:21:23,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:21:23,373 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:21:23,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:21:23,375 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:21:23,375 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:21:23,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:21:23,376 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:21:23,376 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:21:23,377 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:21:23,377 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:21:23,377 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:21:23,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:21:23,378 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:21:23,378 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:21:23,378 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:21:23,378 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:21:23,379 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:21:23,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:21:23,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:21:23,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:21:23,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:21:23,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:21:23,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:21:23,381 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:21:23,381 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:21:23,382 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:21:23,382 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_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27e059eb1633b1ab9c045484375455e2667fa3360a55d0bc53eccfa53fe7600f [2022-11-16 11:21:23,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:21:23,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:21:23,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:21:23,974 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:21:23,977 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:21:23,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2022-11-16 11:21:24,069 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/data/c2c3d7fdd/ceb363c5c9374ba49b23ed4451f2d8ab/FLAG0d829625c [2022-11-16 11:21:24,782 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:21:24,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/sv-benchmarks/c/ldv-memsafety/memleaks_test18_2.i [2022-11-16 11:21:24,802 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/data/c2c3d7fdd/ceb363c5c9374ba49b23ed4451f2d8ab/FLAG0d829625c [2022-11-16 11:21:25,008 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/data/c2c3d7fdd/ceb363c5c9374ba49b23ed4451f2d8ab [2022-11-16 11:21:25,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:21:25,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:21:25,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:21:25,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:21:25,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:21:25,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:21:25" (1/1) ... [2022-11-16 11:21:25,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef43355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25, skipping insertion in model container [2022-11-16 11:21:25,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:21:25" (1/1) ... [2022-11-16 11:21:25,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:21:25,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:21:25,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:21:25,643 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 11:21:25,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:21:25,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:21:25,734 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:21:25,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:21:25,845 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:21:25,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25 WrapperNode [2022-11-16 11:21:25,846 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:21:25,847 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:21:25,847 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:21:25,847 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:21:25,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25" (1/1) ... [2022-11-16 11:21:25,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25" (1/1) ... [2022-11-16 11:21:25,958 INFO L138 Inliner]: procedures = 165, calls = 73, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 54 [2022-11-16 11:21:25,958 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:21:25,959 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:21:25,959 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:21:25,959 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:21:25,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25" (1/1) ... [2022-11-16 11:21:25,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25" (1/1) ... [2022-11-16 11:21:25,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25" (1/1) ... [2022-11-16 11:21:25,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25" (1/1) ... [2022-11-16 11:21:25,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25" (1/1) ... [2022-11-16 11:21:25,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25" (1/1) ... [2022-11-16 11:21:25,993 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25" (1/1) ... [2022-11-16 11:21:25,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25" (1/1) ... [2022-11-16 11:21:25,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:21:25,998 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:21:25,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:21:25,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:21:26,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25" (1/1) ... [2022-11-16 11:21:26,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:21:26,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:21:26,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:21:26,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:21:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-16 11:21:26,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-16 11:21:26,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:21:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:21:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 11:21:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 11:21:26,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:21:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-16 11:21:26,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:21:26,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:21:26,285 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:21:26,288 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:21:26,644 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:21:26,652 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:21:26,652 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:21:26,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:21:26 BoogieIcfgContainer [2022-11-16 11:21:26,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:21:26,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:21:26,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:21:26,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:21:26,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:21:25" (1/3) ... [2022-11-16 11:21:26,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76aec40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:21:26, skipping insertion in model container [2022-11-16 11:21:26,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:21:25" (2/3) ... [2022-11-16 11:21:26,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76aec40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:21:26, skipping insertion in model container [2022-11-16 11:21:26,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:21:26" (3/3) ... [2022-11-16 11:21:26,666 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test18_2.i [2022-11-16 11:21:26,693 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:21:26,693 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-11-16 11:21:26,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:21:26,795 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;@30ed478b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:21:26,796 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-11-16 11:21:26,801 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 25 states have (on average 1.72) internal successors, (43), 36 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:21:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:21:26,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:26,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:26,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:26,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1121226903, now seen corresponding path program 1 times [2022-11-16 11:21:26,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:26,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567629469] [2022-11-16 11:21:26,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:26,841 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 [2022-11-16 11:21:26,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:26,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:26,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:27,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:21:27,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:27,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:21:27,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:21:27,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:27,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567629469] [2022-11-16 11:21:27,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567629469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:21:27,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:21:27,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:21:27,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156616771] [2022-11-16 11:21:27,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:21:27,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:21:27,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:27,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:21:27,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:21:27,232 INFO L87 Difference]: Start difference. First operand has 40 states, 25 states have (on average 1.72) internal successors, (43), 36 states have internal predecessors, (43), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2022-11-16 11:21:27,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:27,423 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2022-11-16 11:21:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:21:27,427 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 [2022-11-16 11:21:27,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:27,437 INFO L225 Difference]: With dead ends: 74 [2022-11-16 11:21:27,438 INFO L226 Difference]: Without dead ends: 70 [2022-11-16 11:21:27,440 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 [2022-11-16 11:21:27,445 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 32 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:27,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 217 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:21:27,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-16 11:21:27,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 42. [2022-11-16 11:21:27,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 37 states have internal predecessors, (42), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:21:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2022-11-16 11:21:27,515 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 11 [2022-11-16 11:21:27,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:27,518 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2022-11-16 11:21:27,518 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) [2022-11-16 11:21:27,519 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2022-11-16 11:21:27,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:21:27,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:27,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:27,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:21:27,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:27,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:27,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:27,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2008730584, now seen corresponding path program 1 times [2022-11-16 11:21:27,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:27,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052618384] [2022-11-16 11:21:27,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:27,738 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 [2022-11-16 11:21:27,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:27,740 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:27,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:27,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:27,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:21:27,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:21:27,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:21:27,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:27,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052618384] [2022-11-16 11:21:27,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052618384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:21:27,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:21:27,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:21:27,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413080273] [2022-11-16 11:21:27,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:21:27,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:21:27,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:27,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:21:27,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:21:27,909 INFO L87 Difference]: Start difference. First operand 42 states and 48 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) [2022-11-16 11:21:28,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:28,100 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2022-11-16 11:21:28,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:21:28,101 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 [2022-11-16 11:21:28,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:28,102 INFO L225 Difference]: With dead ends: 69 [2022-11-16 11:21:28,103 INFO L226 Difference]: Without dead ends: 67 [2022-11-16 11:21:28,103 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 [2022-11-16 11:21:28,105 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 26 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:28,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 145 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:21:28,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-16 11:21:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 48. [2022-11-16 11:21:28,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.53125) internal successors, (49), 42 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 11:21:28,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-11-16 11:21:28,116 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 11 [2022-11-16 11:21:28,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:28,116 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-11-16 11:21:28,117 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) [2022-11-16 11:21:28,117 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-11-16 11:21:28,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:21:28,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:28,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:28,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:28,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:28,332 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:28,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:28,335 INFO L85 PathProgramCache]: Analyzing trace with hash 398308128, now seen corresponding path program 1 times [2022-11-16 11:21:28,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:28,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567189054] [2022-11-16 11:21:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:28,336 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 [2022-11-16 11:21:28,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:28,341 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:28,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:28,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:28,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:21:28,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:21:28,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:21:28,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:28,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567189054] [2022-11-16 11:21:28,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567189054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:21:28,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:21:28,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:21:28,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759111462] [2022-11-16 11:21:28,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:21:28,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:21:28,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:28,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:21:28,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:21:28,533 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-16 11:21:28,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:28,630 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2022-11-16 11:21:28,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:21:28,632 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2022-11-16 11:21:28,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:28,634 INFO L225 Difference]: With dead ends: 83 [2022-11-16 11:21:28,634 INFO L226 Difference]: Without dead ends: 83 [2022-11-16 11:21:28,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:21:28,639 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 87 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:28,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 69 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:21:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-16 11:21:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 49. [2022-11-16 11:21:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 43 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-16 11:21:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2022-11-16 11:21:28,651 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 12 [2022-11-16 11:21:28,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:28,651 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2022-11-16 11:21:28,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-11-16 11:21:28,652 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2022-11-16 11:21:28,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:21:28,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:28,653 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:28,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:28,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:28,867 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:28,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1387011810, now seen corresponding path program 1 times [2022-11-16 11:21:28,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:28,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984254223] [2022-11-16 11:21:28,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:28,869 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 [2022-11-16 11:21:28,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:28,871 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:28,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:28,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:21:28,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:29,013 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 [2022-11-16 11:21:29,118 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_10 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_10))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-16 11:21:29,179 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 11:21:29,180 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 [2022-11-16 11:21:29,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-16 11:21:29,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:29,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:21:29,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:29,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984254223] [2022-11-16 11:21:29,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984254223] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:21:29,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:21:29,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2022-11-16 11:21:29,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618397310] [2022-11-16 11:21:29,474 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:21:29,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:21:29,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:29,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:21:29,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2022-11-16 11:21:29,476 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2022-11-16 11:21:29,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:29,725 INFO L93 Difference]: Finished difference Result 76 states and 90 transitions. [2022-11-16 11:21:29,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:21:29,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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 18 [2022-11-16 11:21:29,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:29,728 INFO L225 Difference]: With dead ends: 76 [2022-11-16 11:21:29,728 INFO L226 Difference]: Without dead ends: 76 [2022-11-16 11:21:29,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=41, Unknown=1, NotChecked=12, Total=72 [2022-11-16 11:21:29,730 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:29,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 130 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 95 Unchecked, 0.2s Time] [2022-11-16 11:21:29,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-16 11:21:29,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 69. [2022-11-16 11:21:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 50 states have (on average 1.52) internal successors, (76), 60 states have internal predecessors, (76), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-16 11:21:29,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2022-11-16 11:21:29,759 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 18 [2022-11-16 11:21:29,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:29,760 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2022-11-16 11:21:29,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 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) [2022-11-16 11:21:29,761 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2022-11-16 11:21:29,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:21:29,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:29,764 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:29,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:29,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:29,983 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:29,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:29,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1387011811, now seen corresponding path program 1 times [2022-11-16 11:21:29,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:29,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964542386] [2022-11-16 11:21:29,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:29,985 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 [2022-11-16 11:21:29,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:29,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:29,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 11:21:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:30,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 11:21:30,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:30,136 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 [2022-11-16 11:21:30,151 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 [2022-11-16 11:21:30,446 WARN L855 $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_21 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_21) |c_#length|)))) is different from true [2022-11-16 11:21:30,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:21:30,551 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 [2022-11-16 11:21:30,586 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:21:30,587 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 [2022-11-16 11:21:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-16 11:21:30,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:31,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:31,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964542386] [2022-11-16 11:21:31,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964542386] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:21:31,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [743135538] [2022-11-16 11:21:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:31,193 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:21:31,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:21:31,197 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:21:31,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-16 11:21:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:31,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 11:21:31,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:31,412 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 [2022-11-16 11:21:31,421 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 [2022-11-16 11:21:31,548 WARN L855 $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_31 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_31) |c_#length|)))) is different from true [2022-11-16 11:21:31,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:21:31,594 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 [2022-11-16 11:21:31,610 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:21:31,611 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 [2022-11-16 11:21:31,670 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-16 11:21:31,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:31,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [743135538] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:21:31,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:21:31,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2022-11-16 11:21:31,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085574168] [2022-11-16 11:21:31,991 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:21:31,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:21:31,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:31,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:21:31,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=89, Unknown=2, NotChecked=38, Total=156 [2022-11-16 11:21:31,992 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:21:32,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:32,748 INFO L93 Difference]: Finished difference Result 139 states and 168 transitions. [2022-11-16 11:21:32,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:21:32,750 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 18 [2022-11-16 11:21:32,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:32,751 INFO L225 Difference]: With dead ends: 139 [2022-11-16 11:21:32,751 INFO L226 Difference]: Without dead ends: 139 [2022-11-16 11:21:32,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=127, Unknown=2, NotChecked=46, Total=210 [2022-11-16 11:21:32,753 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 69 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:32,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 327 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 327 Invalid, 0 Unknown, 172 Unchecked, 0.6s Time] [2022-11-16 11:21:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-16 11:21:32,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 84. [2022-11-16 11:21:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 64 states have (on average 1.546875) internal successors, (99), 74 states have internal predecessors, (99), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-16 11:21:32,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 114 transitions. [2022-11-16 11:21:32,766 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 114 transitions. Word has length 18 [2022-11-16 11:21:32,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:32,767 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 114 transitions. [2022-11-16 11:21:32,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 11:21:32,767 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 114 transitions. [2022-11-16 11:21:32,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 11:21:32,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:32,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:32,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:21:32,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:21:33,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:21:33,188 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:33,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:33,189 INFO L85 PathProgramCache]: Analyzing trace with hash 881453185, now seen corresponding path program 1 times [2022-11-16 11:21:33,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:33,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615992413] [2022-11-16 11:21:33,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:33,191 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 [2022-11-16 11:21:33,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:33,193 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:33,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:33,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:21:33,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:21:33,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:21:33,338 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:33,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615992413] [2022-11-16 11:21:33,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615992413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:21:33,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:21:33,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:21:33,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402563196] [2022-11-16 11:21:33,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:21:33,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:21:33,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:33,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:21:33,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:21:33,341 INFO L87 Difference]: Start difference. First operand 84 states and 114 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-16 11:21:33,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:33,403 INFO L93 Difference]: Finished difference Result 68 states and 86 transitions. [2022-11-16 11:21:33,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:21:33,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 18 [2022-11-16 11:21:33,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:33,406 INFO L225 Difference]: With dead ends: 68 [2022-11-16 11:21:33,406 INFO L226 Difference]: Without dead ends: 64 [2022-11-16 11:21:33,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:21:33,407 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:33,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:21:33,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-16 11:21:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2022-11-16 11:21:33,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 47 states have (on average 1.553191489361702) internal successors, (73), 56 states have internal predecessors, (73), 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) [2022-11-16 11:21:33,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2022-11-16 11:21:33,428 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 18 [2022-11-16 11:21:33,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:33,428 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2022-11-16 11:21:33,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-16 11:21:33,431 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2022-11-16 11:21:33,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 11:21:33,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:33,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:33,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:33,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:33,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:33,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:33,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1478437295, now seen corresponding path program 1 times [2022-11-16 11:21:33,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:33,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998750152] [2022-11-16 11:21:33,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:33,653 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 [2022-11-16 11:21:33,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:33,654 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:33,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:33,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:21:33,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:33,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:21:33,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:21:33,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:33,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998750152] [2022-11-16 11:21:33,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998750152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:21:33,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:21:33,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:21:33,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132545241] [2022-11-16 11:21:33,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:21:33,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:21:33,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:33,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:21:33,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:21:33,777 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 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) [2022-11-16 11:21:33,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:33,839 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2022-11-16 11:21:33,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:21:33,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 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 [2022-11-16 11:21:33,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:33,841 INFO L225 Difference]: With dead ends: 79 [2022-11-16 11:21:33,841 INFO L226 Difference]: Without dead ends: 79 [2022-11-16 11:21:33,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:21:33,843 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:33,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 153 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:21:33,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-16 11:21:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2022-11-16 11:21:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 52 states have (on average 1.5) internal successors, (78), 60 states have internal predecessors, (78), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 11:21:33,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2022-11-16 11:21:33,850 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 20 [2022-11-16 11:21:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:33,850 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2022-11-16 11:21:33,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 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) [2022-11-16 11:21:33,851 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2022-11-16 11:21:33,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 11:21:33,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:33,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:33,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:34,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:34,067 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:34,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:34,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1073719666, now seen corresponding path program 1 times [2022-11-16 11:21:34,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:34,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127850527] [2022-11-16 11:21:34,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:34,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:34,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:34,069 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:34,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:34,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:21:34,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:34,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:21:34,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:21:34,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:34,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127850527] [2022-11-16 11:21:34,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127850527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:21:34,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:21:34,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:21:34,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706020639] [2022-11-16 11:21:34,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:21:34,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:21:34,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:34,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:21:34,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:21:34,196 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:21:34,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:34,268 INFO L93 Difference]: Finished difference Result 67 states and 76 transitions. [2022-11-16 11:21:34,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:21:34,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2022-11-16 11:21:34,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:34,270 INFO L225 Difference]: With dead ends: 67 [2022-11-16 11:21:34,270 INFO L226 Difference]: Without dead ends: 67 [2022-11-16 11:21:34,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:21:34,271 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 17 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:34,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 102 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:21:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-16 11:21:34,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2022-11-16 11:21:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 52 states have internal predecessors, (62), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 11:21:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2022-11-16 11:21:34,277 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 20 [2022-11-16 11:21:34,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:34,277 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2022-11-16 11:21:34,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 11:21:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2022-11-16 11:21:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 11:21:34,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:34,279 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:34,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:34,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:34,490 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:34,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:34,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1074427268, now seen corresponding path program 1 times [2022-11-16 11:21:34,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:34,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526488448] [2022-11-16 11:21:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:34,491 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 [2022-11-16 11:21:34,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:34,492 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:34,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 11:21:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:34,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:21:34,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:21:34,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:34,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:21:34,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:34,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526488448] [2022-11-16 11:21:34,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526488448] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:21:34,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:21:34,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 9 [2022-11-16 11:21:34,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24213095] [2022-11-16 11:21:34,998 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:21:34,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:21:34,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:34,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:21:34,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:21:34,999 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 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) [2022-11-16 11:21:35,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:35,145 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2022-11-16 11:21:35,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:21:35,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 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 21 [2022-11-16 11:21:35,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:35,147 INFO L225 Difference]: With dead ends: 59 [2022-11-16 11:21:35,147 INFO L226 Difference]: Without dead ends: 59 [2022-11-16 11:21:35,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:21:35,148 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 86 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:35,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 100 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 8 Unchecked, 0.1s Time] [2022-11-16 11:21:35,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-16 11:21:35,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-16 11:21:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 51 states have internal predecessors, (60), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 11:21:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 68 transitions. [2022-11-16 11:21:35,162 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 68 transitions. Word has length 21 [2022-11-16 11:21:35,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:35,163 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 68 transitions. [2022-11-16 11:21:35,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 8 states have internal predecessors, (33), 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) [2022-11-16 11:21:35,163 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 68 transitions. [2022-11-16 11:21:35,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 11:21:35,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:35,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:35,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:21:35,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:35,378 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:35,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:35,379 INFO L85 PathProgramCache]: Analyzing trace with hash -807401739, now seen corresponding path program 1 times [2022-11-16 11:21:35,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:35,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880838330] [2022-11-16 11:21:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:35,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:35,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:35,381 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:35,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:35,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:21:35,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:21:35,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:35,677 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:21:35,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:35,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880838330] [2022-11-16 11:21:35,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880838330] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:21:35,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:21:35,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 11:21:35,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617499079] [2022-11-16 11:21:35,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:21:35,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:21:35,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:35,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:21:35,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:21:35,680 INFO L87 Difference]: Start difference. First operand 59 states and 68 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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) [2022-11-16 11:21:35,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:35,856 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2022-11-16 11:21:35,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:21:35,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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) Word has length 22 [2022-11-16 11:21:35,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:35,859 INFO L225 Difference]: With dead ends: 137 [2022-11-16 11:21:35,859 INFO L226 Difference]: Without dead ends: 137 [2022-11-16 11:21:35,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:21:35,860 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 241 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:35,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 146 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:21:35,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-16 11:21:35,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 77. [2022-11-16 11:21:35,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 60 states have (on average 1.3333333333333333) internal successors, (80), 65 states have internal predecessors, (80), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-16 11:21:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 94 transitions. [2022-11-16 11:21:35,868 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 94 transitions. Word has length 22 [2022-11-16 11:21:35,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:35,868 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 94 transitions. [2022-11-16 11:21:35,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 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) [2022-11-16 11:21:35,869 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 94 transitions. [2022-11-16 11:21:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:21:35,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:35,870 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, 1] [2022-11-16 11:21:35,892 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:36,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:36,084 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:36,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:36,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2128418719, now seen corresponding path program 1 times [2022-11-16 11:21:36,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:36,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707301308] [2022-11-16 11:21:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:36,085 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 [2022-11-16 11:21:36,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:36,087 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:36,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:36,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:21:36,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:36,389 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)))) is different from true [2022-11-16 11:21:36,409 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:21:36,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:36,577 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret38#1.base_21| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_21|))) (= (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_21| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|))) is different from false [2022-11-16 11:21:36,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:36,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707301308] [2022-11-16 11:21:36,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707301308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:21:36,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1862098083] [2022-11-16 11:21:36,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:36,580 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:21:36,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:21:36,583 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:21:36,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-16 11:21:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:36,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:21:36,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:21:37,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:37,202 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret38#1.base_24| (_ BitVec 32))) (or (= (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_24| (_ bv0 1)) |c_ULTIMATE.start_main_old_#valid#1|) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret38#1.base_24|))))) is different from false [2022-11-16 11:21:37,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1862098083] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:21:37,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:21:37,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-11-16 11:21:37,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29645149] [2022-11-16 11:21:37,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:21:37,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:21:37,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:37,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:21:37,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=126, Unknown=3, NotChecked=72, Total=240 [2022-11-16 11:21:37,206 INFO L87 Difference]: Start difference. First operand 77 states and 94 transitions. Second operand has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2022-11-16 11:21:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:37,338 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2022-11-16 11:21:37,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:21:37,339 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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 24 [2022-11-16 11:21:37,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:37,340 INFO L225 Difference]: With dead ends: 82 [2022-11-16 11:21:37,340 INFO L226 Difference]: Without dead ends: 75 [2022-11-16 11:21:37,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 64 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=172, Unknown=3, NotChecked=84, Total=306 [2022-11-16 11:21:37,341 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:37,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 178 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 97 Unchecked, 0.1s Time] [2022-11-16 11:21:37,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-11-16 11:21:37,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2022-11-16 11:21:37,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 61 states have internal predecessors, (74), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-16 11:21:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2022-11-16 11:21:37,347 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 24 [2022-11-16 11:21:37,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:37,347 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2022-11-16 11:21:37,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 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) [2022-11-16 11:21:37,348 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2022-11-16 11:21:37,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 11:21:37,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:37,349 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:37,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:21:37,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:37,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:37,759 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:37,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:37,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1844216072, now seen corresponding path program 1 times [2022-11-16 11:21:37,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:37,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150607076] [2022-11-16 11:21:37,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:37,760 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 [2022-11-16 11:21:37,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:37,762 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:37,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:37,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:21:37,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:37,916 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 [2022-11-16 11:21:37,924 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 [2022-11-16 11:21:38,116 WARN L855 $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_85 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_85) |c_#length|)))) is different from true [2022-11-16 11:21:38,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:21:38,147 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 [2022-11-16 11:21:38,167 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:21:38,167 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 [2022-11-16 11:21:38,351 WARN L855 $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_86 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_86) |c_#length|)))) is different from true [2022-11-16 11:21:38,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:21:38,379 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 [2022-11-16 11:21:38,393 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:21:38,394 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 [2022-11-16 11:21:38,457 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2022-11-16 11:21:38,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:38,975 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:38,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150607076] [2022-11-16 11:21:38,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150607076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:21:38,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1454496162] [2022-11-16 11:21:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:38,976 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:21:38,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:21:38,991 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:21:39,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-16 11:21:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:39,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-16 11:21:39,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:39,243 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 [2022-11-16 11:21:39,251 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 [2022-11-16 11:21:39,360 WARN L855 $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_104 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_104) |c_#length|)))) is different from true [2022-11-16 11:21:39,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:21:39,387 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 [2022-11-16 11:21:39,403 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:21:39,404 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 [2022-11-16 11:21:39,513 WARN L855 $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_105 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_105) |c_#length|)))) is different from true [2022-11-16 11:21:39,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:21:39,541 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 [2022-11-16 11:21:39,564 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:21:39,564 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 [2022-11-16 11:21:39,593 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 6 not checked. [2022-11-16 11:21:39,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:39,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1454496162] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:21:39,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:21:39,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 14 [2022-11-16 11:21:39,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807084858] [2022-11-16 11:21:39,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:21:39,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:21:39,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:39,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:21:39,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=129, Unknown=4, NotChecked=100, Total=272 [2022-11-16 11:21:39,926 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 11:21:40,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:40,586 INFO L93 Difference]: Finished difference Result 101 states and 117 transitions. [2022-11-16 11:21:40,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:21:40,587 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 28 [2022-11-16 11:21:40,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:40,588 INFO L225 Difference]: With dead ends: 101 [2022-11-16 11:21:40,588 INFO L226 Difference]: Without dead ends: 101 [2022-11-16 11:21:40,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=47, Invalid=175, Unknown=4, NotChecked=116, Total=342 [2022-11-16 11:21:40,590 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 55 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:40,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 206 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 253 Invalid, 0 Unknown, 200 Unchecked, 0.4s Time] [2022-11-16 11:21:40,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-16 11:21:40,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 83. [2022-11-16 11:21:40,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 66 states have (on average 1.393939393939394) internal successors, (92), 72 states have internal predecessors, (92), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-16 11:21:40,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2022-11-16 11:21:40,600 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 28 [2022-11-16 11:21:40,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:40,601 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2022-11-16 11:21:40,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 states have internal predecessors, (25), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-16 11:21:40,602 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2022-11-16 11:21:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 11:21:40,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:40,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:40,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:40,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2022-11-16 11:21:41,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:21:41,026 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:41,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:41,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1022360221, now seen corresponding path program 1 times [2022-11-16 11:21:41,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:41,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918778058] [2022-11-16 11:21:41,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:41,027 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 [2022-11-16 11:21:41,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:41,028 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:41,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:41,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:21:41,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:21:41,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:42,239 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 9 [2022-11-16 11:21:42,582 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:21:42,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:42,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918778058] [2022-11-16 11:21:42,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918778058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:21:42,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:21:42,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-16 11:21:42,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389982667] [2022-11-16 11:21:42,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:21:42,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:21:42,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:42,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:21:42,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:21:42,585 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 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) [2022-11-16 11:21:45,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:45,405 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2022-11-16 11:21:45,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 11:21:45,407 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 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 30 [2022-11-16 11:21:45,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:45,408 INFO L225 Difference]: With dead ends: 150 [2022-11-16 11:21:45,409 INFO L226 Difference]: Without dead ends: 150 [2022-11-16 11:21:45,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:21:45,410 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 154 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:45,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 310 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 434 Invalid, 0 Unknown, 66 Unchecked, 1.8s Time] [2022-11-16 11:21:45,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-16 11:21:45,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 82. [2022-11-16 11:21:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 65 states have (on average 1.353846153846154) internal successors, (88), 71 states have internal predecessors, (88), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-16 11:21:45,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2022-11-16 11:21:45,416 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 30 [2022-11-16 11:21:45,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:45,417 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2022-11-16 11:21:45,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.7333333333333334) internal successors, (41), 14 states have internal predecessors, (41), 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) [2022-11-16 11:21:45,417 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2022-11-16 11:21:45,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-16 11:21:45,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:45,418 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:45,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:45,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:45,619 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:45,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1628395789, now seen corresponding path program 1 times [2022-11-16 11:21:45,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:45,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900566173] [2022-11-16 11:21:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:45,620 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 [2022-11-16 11:21:45,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:45,622 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:45,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 11:21:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:45,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:21:45,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:45,898 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 15 treesize of output 11 [2022-11-16 11:21:46,117 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 [2022-11-16 11:21:46,149 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:21:46,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:21:46,432 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:46,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900566173] [2022-11-16 11:21:46,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900566173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:21:46,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:21:46,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2022-11-16 11:21:46,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969047437] [2022-11-16 11:21:46,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:21:46,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:21:46,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:46,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:21:46,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:21:46,435 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand has 17 states, 16 states have (on average 2.375) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:21:47,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:47,865 INFO L93 Difference]: Finished difference Result 115 states and 126 transitions. [2022-11-16 11:21:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:21:47,866 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 31 [2022-11-16 11:21:47,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:47,868 INFO L225 Difference]: With dead ends: 115 [2022-11-16 11:21:47,868 INFO L226 Difference]: Without dead ends: 115 [2022-11-16 11:21:47,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=168, Invalid=888, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:21:47,870 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 189 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:47,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 289 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 386 Invalid, 0 Unknown, 47 Unchecked, 0.7s Time] [2022-11-16 11:21:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-16 11:21:47,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 90. [2022-11-16 11:21:47,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 71 states have (on average 1.3380281690140845) internal successors, (95), 78 states have internal predecessors, (95), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (9), 8 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-16 11:21:47,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2022-11-16 11:21:47,876 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 31 [2022-11-16 11:21:47,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:47,877 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2022-11-16 11:21:47,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.375) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:21:47,877 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2022-11-16 11:21:47,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 11:21:47,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:47,878 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:47,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:21:48,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:48,093 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:48,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:48,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1059338178, now seen corresponding path program 1 times [2022-11-16 11:21:48,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:48,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855322217] [2022-11-16 11:21:48,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:48,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:48,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:48,095 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:48,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:48,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:21:48,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:48,719 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 15 treesize of output 11 [2022-11-16 11:21:49,359 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 15 treesize of output 7 [2022-11-16 11:21:49,441 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:21:49,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:21:49,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:49,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855322217] [2022-11-16 11:21:49,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855322217] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:21:49,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:21:49,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 21 [2022-11-16 11:21:49,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835904993] [2022-11-16 11:21:49,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:21:49,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:21:49,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:49,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:21:49,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:21:49,971 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 19 states have internal predecessors, (49), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 11:21:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:50,513 INFO L93 Difference]: Finished difference Result 159 states and 185 transitions. [2022-11-16 11:21:50,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:21:50,514 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 19 states have internal predecessors, (49), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 32 [2022-11-16 11:21:50,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:50,516 INFO L225 Difference]: With dead ends: 159 [2022-11-16 11:21:50,516 INFO L226 Difference]: Without dead ends: 159 [2022-11-16 11:21:50,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2022-11-16 11:21:50,517 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 30 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:50,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 272 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 120 Invalid, 0 Unknown, 102 Unchecked, 0.3s Time] [2022-11-16 11:21:50,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-16 11:21:50,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 139. [2022-11-16 11:21:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 112 states have (on average 1.3035714285714286) internal successors, (146), 120 states have internal predecessors, (146), 8 states have call successors, (8), 6 states have call predecessors, (8), 10 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-16 11:21:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 169 transitions. [2022-11-16 11:21:50,532 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 169 transitions. Word has length 32 [2022-11-16 11:21:50,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:50,533 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 169 transitions. [2022-11-16 11:21:50,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 19 states have internal predecessors, (49), 5 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 11:21:50,533 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 169 transitions. [2022-11-16 11:21:50,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-16 11:21:50,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:50,534 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:50,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:50,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:50,735 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:50,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:50,735 INFO L85 PathProgramCache]: Analyzing trace with hash 650513953, now seen corresponding path program 2 times [2022-11-16 11:21:50,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:50,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810890053] [2022-11-16 11:21:50,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:21:50,736 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 [2022-11-16 11:21:50,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:50,737 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:50,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 11:21:50,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:21:50,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:21:50,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:21:50,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:50,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:21:50,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:21:50,906 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:50,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810890053] [2022-11-16 11:21:50,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810890053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:21:50,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:21:50,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:21:50,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132851710] [2022-11-16 11:21:50,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:21:50,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:21:50,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:50,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:21:50,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:21:50,908 INFO L87 Difference]: Start difference. First operand 139 states and 169 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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) [2022-11-16 11:21:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:50,941 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2022-11-16 11:21:50,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:21:50,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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 32 [2022-11-16 11:21:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:50,943 INFO L225 Difference]: With dead ends: 101 [2022-11-16 11:21:50,943 INFO L226 Difference]: Without dead ends: 97 [2022-11-16 11:21:50,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:21:50,944 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:50,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 134 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:21:50,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-16 11:21:50,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 92. [2022-11-16 11:21:50,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 80 states have internal predecessors, (94), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-16 11:21:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2022-11-16 11:21:50,949 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 32 [2022-11-16 11:21:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:50,950 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2022-11-16 11:21:50,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 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) [2022-11-16 11:21:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2022-11-16 11:21:50,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 11:21:50,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:50,951 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:50,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:21:51,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:51,165 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:51,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:51,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1520254763, now seen corresponding path program 1 times [2022-11-16 11:21:51,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:51,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967921722] [2022-11-16 11:21:51,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:51,167 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 [2022-11-16 11:21:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:51,168 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:51,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:51,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:21:51,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:51,352 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 [2022-11-16 11:21:51,444 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 15 treesize of output 11 [2022-11-16 11:21:51,561 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 [2022-11-16 11:21:51,671 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 [2022-11-16 11:21:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:21:51,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:21:52,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:52,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967921722] [2022-11-16 11:21:52,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967921722] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:21:52,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:21:52,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 18 [2022-11-16 11:21:52,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501261289] [2022-11-16 11:21:52,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:21:52,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:21:52,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:52,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:21:52,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:21:52,198 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:21:53,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:53,561 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2022-11-16 11:21:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:21:53,562 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 33 [2022-11-16 11:21:53,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:53,563 INFO L225 Difference]: With dead ends: 98 [2022-11-16 11:21:53,563 INFO L226 Difference]: Without dead ends: 98 [2022-11-16 11:21:53,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2022-11-16 11:21:53,564 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 39 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:53,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 315 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 503 Invalid, 0 Unknown, 45 Unchecked, 0.9s Time] [2022-11-16 11:21:53,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-16 11:21:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2022-11-16 11:21:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 75 states have (on average 1.28) internal successors, (96), 82 states have internal predecessors, (96), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-16 11:21:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2022-11-16 11:21:53,570 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 33 [2022-11-16 11:21:53,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:53,570 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2022-11-16 11:21:53,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 11:21:53,571 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2022-11-16 11:21:53,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-16 11:21:53,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:53,572 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:53,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:53,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:53,785 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:53,786 INFO L85 PathProgramCache]: Analyzing trace with hash 520579815, now seen corresponding path program 1 times [2022-11-16 11:21:53,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:53,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813371884] [2022-11-16 11:21:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:21:53,787 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 [2022-11-16 11:21:53,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:53,789 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:53,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 11:21:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:21:53,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:21:53,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:21:53,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:21:54,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:54,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813371884] [2022-11-16 11:21:54,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813371884] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:21:54,123 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:21:54,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-16 11:21:54,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308741512] [2022-11-16 11:21:54,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:21:54,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:21:54,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:21:54,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:21:54,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:21:54,125 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 11:21:54,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:21:54,323 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2022-11-16 11:21:54,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:21:54,324 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 36 [2022-11-16 11:21:54,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:21:54,325 INFO L225 Difference]: With dead ends: 99 [2022-11-16 11:21:54,325 INFO L226 Difference]: Without dead ends: 99 [2022-11-16 11:21:54,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:21:54,326 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 49 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:21:54,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 231 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:21:54,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-16 11:21:54,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2022-11-16 11:21:54,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 78 states have internal predecessors, (86), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-16 11:21:54,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2022-11-16 11:21:54,332 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 36 [2022-11-16 11:21:54,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:21:54,332 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2022-11-16 11:21:54,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 11:21:54,333 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2022-11-16 11:21:54,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-16 11:21:54,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:21:54,334 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:21:54,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:21:54,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:21:54,548 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:21:54,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:21:54,548 INFO L85 PathProgramCache]: Analyzing trace with hash -159020851, now seen corresponding path program 2 times [2022-11-16 11:21:54,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:21:54,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615940490] [2022-11-16 11:21:54,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:21:54,549 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 [2022-11-16 11:21:54,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:21:54,551 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:21:54,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:21:54,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:21:54,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:21:54,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-16 11:21:54,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:54,743 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 [2022-11-16 11:21:54,755 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 7 [2022-11-16 11:21:54,935 WARN L855 $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_198 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_198))))) is different from true [2022-11-16 11:21:54,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:21:54,964 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 [2022-11-16 11:21:54,979 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:21:54,980 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 [2022-11-16 11:21:55,155 WARN L855 $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_199 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_199) |c_#length|)))) is different from true [2022-11-16 11:21:55,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:21:55,185 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 [2022-11-16 11:21:55,199 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:21:55,200 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 [2022-11-16 11:21:55,362 WARN L855 $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_200 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_200) |c_#length|)))) is different from true [2022-11-16 11:21:55,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:21:55,399 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 [2022-11-16 11:21:55,415 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:21:55,415 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 [2022-11-16 11:21:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 12 not checked. [2022-11-16 11:21:55,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:21:58,042 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:21:58,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615940490] [2022-11-16 11:21:58,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615940490] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:21:58,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [157329536] [2022-11-16 11:21:58,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:21:58,043 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:21:58,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:21:58,045 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:21:58,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-11-16 11:21:58,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:21:58,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:21:58,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-16 11:21:58,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:21:58,322 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 [2022-11-16 11:21:58,330 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 [2022-11-16 11:21:58,443 WARN L855 $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_226 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_226) |c_#length|)))) is different from true [2022-11-16 11:21:58,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:21:58,494 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 [2022-11-16 11:21:58,509 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:21:58,510 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 [2022-11-16 11:21:58,630 WARN L855 $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_227 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_227) |c_#length|)))) is different from true [2022-11-16 11:21:58,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:21:58,658 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 [2022-11-16 11:21:58,676 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:21:58,677 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 [2022-11-16 11:21:58,801 WARN L855 $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_228 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_228) |c_#length|)))) is different from true [2022-11-16 11:21:58,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:21:58,828 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 [2022-11-16 11:21:58,845 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:21:58,845 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 [2022-11-16 11:21:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 12 not checked. [2022-11-16 11:21:58,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:01,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [157329536] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:22:01,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:22:01,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 18 [2022-11-16 11:22:01,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052564027] [2022-11-16 11:22:01,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:01,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:22:01,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:01,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:22:01,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=176, Unknown=7, NotChecked=186, Total=420 [2022-11-16 11:22:01,228 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 19 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 7 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-16 11:22:02,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:02,248 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2022-11-16 11:22:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:22:02,249 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 7 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 38 [2022-11-16 11:22:02,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:02,251 INFO L225 Difference]: With dead ends: 125 [2022-11-16 11:22:02,251 INFO L226 Difference]: Without dead ends: 125 [2022-11-16 11:22:02,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=59, Invalid=230, Unknown=7, NotChecked=210, Total=506 [2022-11-16 11:22:02,252 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 54 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 611 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:02,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 322 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 430 Invalid, 0 Unknown, 611 Unchecked, 0.8s Time] [2022-11-16 11:22:02,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-16 11:22:02,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 105. [2022-11-16 11:22:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 86 states have (on average 1.244186046511628) internal successors, (107), 92 states have internal predecessors, (107), 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) [2022-11-16 11:22:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2022-11-16 11:22:02,268 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 38 [2022-11-16 11:22:02,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:02,268 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2022-11-16 11:22:02,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.0) internal successors, (34), 18 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 7 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-16 11:22:02,269 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2022-11-16 11:22:02,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-16 11:22:02,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:02,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:02,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:02,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:02,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:22:02,683 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:22:02,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:02,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2060951864, now seen corresponding path program 1 times [2022-11-16 11:22:02,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:02,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65463592] [2022-11-16 11:22:02,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:02,684 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 [2022-11-16 11:22:02,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:02,686 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:02,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:02,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 11:22:02,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:02,838 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 [2022-11-16 11:22:03,037 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 11:22:03,037 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 [2022-11-16 11:22:03,172 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 15 treesize of output 11 [2022-11-16 11:22:03,320 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 [2022-11-16 11:22:07,571 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 [2022-11-16 11:22:07,642 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 [2022-11-16 11:22:07,687 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:07,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:22:08,820 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:08,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65463592] [2022-11-16 11:22:08,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65463592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:08,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:22:08,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2022-11-16 11:22:08,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563269054] [2022-11-16 11:22:08,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:08,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 11:22:08,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:08,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 11:22:08,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=523, Unknown=1, NotChecked=0, Total=600 [2022-11-16 11:22:08,823 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 21 states have internal predecessors, (53), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 11:22:11,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:11,090 INFO L93 Difference]: Finished difference Result 133 states and 152 transitions. [2022-11-16 11:22:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 11:22:11,091 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 21 states have internal predecessors, (53), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 38 [2022-11-16 11:22:11,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:11,092 INFO L225 Difference]: With dead ends: 133 [2022-11-16 11:22:11,092 INFO L226 Difference]: Without dead ends: 133 [2022-11-16 11:22:11,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=158, Invalid=1173, Unknown=1, NotChecked=0, Total=1332 [2022-11-16 11:22:11,094 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 107 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:11,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 226 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 535 Invalid, 0 Unknown, 73 Unchecked, 1.1s Time] [2022-11-16 11:22:11,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-16 11:22:11,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 111. [2022-11-16 11:22:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 92 states have (on average 1.2717391304347827) 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) [2022-11-16 11:22:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 130 transitions. [2022-11-16 11:22:11,100 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 130 transitions. Word has length 38 [2022-11-16 11:22:11,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:11,100 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 130 transitions. [2022-11-16 11:22:11,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.2083333333333335) internal successors, (53), 21 states have internal predecessors, (53), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-16 11:22:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 130 transitions. [2022-11-16 11:22:11,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-16 11:22:11,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:11,102 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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] [2022-11-16 11:22:11,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:11,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:11,316 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:22:11,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:11,316 INFO L85 PathProgramCache]: Analyzing trace with hash 594821051, now seen corresponding path program 1 times [2022-11-16 11:22:11,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:11,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924162882] [2022-11-16 11:22:11,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:11,317 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 [2022-11-16 11:22:11,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:11,319 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:11,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:11,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 11:22:11,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:11,912 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 15 treesize of output 11 [2022-11-16 11:22:12,158 INFO L321 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2022-11-16 11:22:12,158 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 36 treesize of output 33 [2022-11-16 11:22:12,390 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 [2022-11-16 11:22:25,742 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_264 (_ BitVec 1)) (|v_ULTIMATE.start_entry_point_#t~mem42#1.base_15| (_ BitVec 32))) (let ((.cse0 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| v_ArrVal_264))) (and (= (select .cse0 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_15|) (_ bv0 1)) (= |c_#valid| (store (store .cse0 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_15| (_ bv0 1)) |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)))))))) is different from true [2022-11-16 11:22:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:22:25,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:33,026 WARN L833 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_entry_point_#t~ret40#1.base_62| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret40#1.base_62|) (_ bv0 1))) (= |c_ULTIMATE.start_main_old_#valid#1| (store (store |c_#valid| |v_ULTIMATE.start_entry_point_#t~ret40#1.base_62| (_ bv0 1)) |c_ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1))))) is different from false [2022-11-16 11:22:33,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:33,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924162882] [2022-11-16 11:22:33,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924162882] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:22:33,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [379437605] [2022-11-16 11:22:33,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:33,029 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:22:33,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:22:33,030 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:22:33,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-16 11:22:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:33,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 11:22:33,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:36,381 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 15 treesize of output 11 [2022-11-16 11:22:36,817 INFO L321 Elim1Store]: treesize reduction 24, result has 17.2 percent of original size [2022-11-16 11:22:36,818 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 41 treesize of output 36 [2022-11-16 11:22:37,153 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 33 treesize of output 21 [2022-11-16 11:22:37,861 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32)) (v_ArrVal_264 (_ BitVec 1)) (|v_ULTIMATE.start_entry_point_#t~mem42#1.base_17| (_ BitVec 32))) (let ((.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| v_ArrVal_264))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_17| (_ bv0 1)))) (and (= (_ bv0 1) (bvadd (select .cse0 |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv1 1))) (= (store .cse0 |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)) |c_#valid|) (= (select .cse1 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_17|) (_ bv0 1)) (not (= |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 32))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)))))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)))) is different from true [2022-11-16 11:22:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:22:37,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:39,061 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 23 treesize of output 21 [2022-11-16 11:22:57,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [379437605] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:22:57,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:22:57,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 29 [2022-11-16 11:22:57,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797453313] [2022-11-16 11:22:57,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:57,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-16 11:22:57,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:57,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-16 11:22:57,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1884, Unknown=18, NotChecked=270, Total=2352 [2022-11-16 11:22:57,575 INFO L87 Difference]: Start difference. First operand 111 states and 130 transitions. Second operand has 30 states, 27 states have (on average 2.111111111111111) internal successors, (57), 26 states have internal predecessors, (57), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:22:57,780 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32)) (v_ArrVal_264 (_ BitVec 1)) (|v_ULTIMATE.start_entry_point_#t~mem42#1.base_17| (_ BitVec 32))) (let ((.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| v_ArrVal_264))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_17| (_ bv0 1)))) (and (= (_ bv0 1) (bvadd (select .cse0 |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv1 1))) (= (store .cse0 |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)) |c_#valid|) (= (select .cse1 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_17|) (_ bv0 1)) (not (= |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 32))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)))))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32))) (exists ((|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)) (exists ((v_ArrVal_264 (_ BitVec 1)) (|v_ULTIMATE.start_entry_point_#t~mem42#1.base_15| (_ BitVec 32))) (let ((.cse2 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| v_ArrVal_264))) (and (= (select .cse2 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_15|) (_ bv0 1)) (= |c_#valid| (store (store .cse2 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_15| (_ bv0 1)) |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1))))))))) is different from true [2022-11-16 11:22:57,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:57,800 INFO L93 Difference]: Finished difference Result 116 states and 134 transitions. [2022-11-16 11:22:57,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 11:22:57,801 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.111111111111111) internal successors, (57), 26 states have internal predecessors, (57), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 40 [2022-11-16 11:22:57,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:57,802 INFO L225 Difference]: With dead ends: 116 [2022-11-16 11:22:57,802 INFO L226 Difference]: Without dead ends: 99 [2022-11-16 11:22:57,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 43.6s TimeCoverageRelationStatistics Valid=193, Invalid=2060, Unknown=19, NotChecked=380, Total=2652 [2022-11-16 11:22:57,804 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 288 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:57,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 233 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 288 Unchecked, 0.0s Time] [2022-11-16 11:22:57,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-16 11:22:57,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-16 11:22:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.2962962962962963) internal successors, (105), 87 states have internal predecessors, (105), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-16 11:22:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2022-11-16 11:22:57,809 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 40 [2022-11-16 11:22:57,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:57,810 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2022-11-16 11:22:57,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.111111111111111) internal successors, (57), 26 states have internal predecessors, (57), 6 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:22:57,810 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2022-11-16 11:22:57,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-16 11:22:57,811 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:57,811 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:57,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:58,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-11-16 11:22:58,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:22:58,225 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:22:58,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:58,226 INFO L85 PathProgramCache]: Analyzing trace with hash -419710261, now seen corresponding path program 1 times [2022-11-16 11:22:58,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:58,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646399162] [2022-11-16 11:22:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:58,226 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 [2022-11-16 11:22:58,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:58,227 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:58,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:58,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:22:58,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:22:58,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:58,557 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:22:58,557 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:22:58,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646399162] [2022-11-16 11:22:58,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646399162] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:22:58,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:22:58,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-16 11:22:58,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521386124] [2022-11-16 11:22:58,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:22:58,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:22:58,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:22:58,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:22:58,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:22:58,560 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 11:22:58,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:22:58,946 INFO L93 Difference]: Finished difference Result 112 states and 120 transitions. [2022-11-16 11:22:58,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:22:58,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 44 [2022-11-16 11:22:58,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:22:58,954 INFO L225 Difference]: With dead ends: 112 [2022-11-16 11:22:58,955 INFO L226 Difference]: Without dead ends: 112 [2022-11-16 11:22:58,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:22:58,956 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 156 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:22:58,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 203 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:22:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-16 11:22:58,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 98. [2022-11-16 11:22:58,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.2625) internal successors, (101), 86 states have internal predecessors, (101), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-16 11:22:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2022-11-16 11:22:58,966 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 44 [2022-11-16 11:22:58,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:22:58,966 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2022-11-16 11:22:58,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 11:22:58,967 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2022-11-16 11:22:58,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 11:22:58,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:22:58,970 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:22:58,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:22:59,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:22:59,172 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:22:59,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:22:59,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1236217923, now seen corresponding path program 1 times [2022-11-16 11:22:59,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:22:59,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [603195811] [2022-11-16 11:22:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:22:59,173 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 [2022-11-16 11:22:59,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:22:59,174 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:22:59,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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)] Waiting until timeout for monitored process [2022-11-16 11:22:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:22:59,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:22:59,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:22:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 11:22:59,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:22:59,978 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 34 treesize of output 30 [2022-11-16 11:23:01,203 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 11:23:01,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:01,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [603195811] [2022-11-16 11:23:01,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [603195811] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:23:01,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:23:01,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-16 11:23:01,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542081943] [2022-11-16 11:23:01,205 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:23:01,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:23:01,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:01,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:23:01,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:23:01,206 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-16 11:23:06,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:06,891 INFO L93 Difference]: Finished difference Result 206 states and 216 transitions. [2022-11-16 11:23:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:23:06,894 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 46 [2022-11-16 11:23:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:06,895 INFO L225 Difference]: With dead ends: 206 [2022-11-16 11:23:06,895 INFO L226 Difference]: Without dead ends: 206 [2022-11-16 11:23:06,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 11:23:06,896 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 412 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:23:06,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 397 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 11:23:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-16 11:23:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 98. [2022-11-16 11:23:06,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.2375) internal successors, (99), 86 states have internal predecessors, (99), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-16 11:23:06,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2022-11-16 11:23:06,903 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 46 [2022-11-16 11:23:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:06,904 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2022-11-16 11:23:06,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.411764705882353) internal successors, (58), 16 states have internal predecessors, (58), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2022-11-16 11:23:06,904 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2022-11-16 11:23:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 11:23:06,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:06,905 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:06,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:07,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:07,120 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:23:07,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:07,120 INFO L85 PathProgramCache]: Analyzing trace with hash -519500702, now seen corresponding path program 3 times [2022-11-16 11:23:07,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:07,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338892924] [2022-11-16 11:23:07,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:23:07,121 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 [2022-11-16 11:23:07,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:07,122 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:07,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:07,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 11:23:07,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:23:07,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-16 11:23:07,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:07,414 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 [2022-11-16 11:23:07,421 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 [2022-11-16 11:23:07,628 WARN L855 $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_362 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_362) |c_#length|)))) is different from true [2022-11-16 11:23:07,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:07,657 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 [2022-11-16 11:23:07,685 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:23:07,685 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 [2022-11-16 11:23:07,844 WARN L855 $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_363 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_363) |c_#length|)))) is different from true [2022-11-16 11:23:07,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:07,878 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 [2022-11-16 11:23:07,891 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:23:07,891 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 [2022-11-16 11:23:08,071 WARN L855 $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_364 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_364) |c_#length|)))) is different from true [2022-11-16 11:23:08,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:08,098 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 [2022-11-16 11:23:08,115 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:23:08,116 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 [2022-11-16 11:23:08,317 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_365 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_365))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-16 11:23:08,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:08,345 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 [2022-11-16 11:23:08,360 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:23:08,360 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 [2022-11-16 11:23:08,442 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 12 trivial. 20 not checked. [2022-11-16 11:23:08,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:09,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:09,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338892924] [2022-11-16 11:23:09,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338892924] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:23:09,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [405514204] [2022-11-16 11:23:09,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:23:09,077 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:23:09,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:23:09,078 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:23:09,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-16 11:23:09,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 11:23:09,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:23:09,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-16 11:23:09,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:09,435 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 [2022-11-16 11:23:09,446 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 [2022-11-16 11:23:09,654 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:23:09,655 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 [2022-11-16 11:23:09,667 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 [2022-11-16 11:23:09,989 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:23:09,990 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 [2022-11-16 11:23:10,020 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:23:10,021 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 [2022-11-16 11:23:10,259 WARN L855 $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_403 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_403) |c_#length|)))) is different from true [2022-11-16 11:23:10,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:10,299 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 [2022-11-16 11:23:10,313 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:23:10,313 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 [2022-11-16 11:23:10,408 WARN L855 $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_404 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_404) |c_#length|)))) is different from true [2022-11-16 11:23:10,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:10,430 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 [2022-11-16 11:23:10,447 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:23:10,447 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 [2022-11-16 11:23:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 4 proven. 41 refuted. 0 times theorem prover too weak. 14 trivial. 14 not checked. [2022-11-16 11:23:10,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:14,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [405514204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:23:14,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:23:14,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 25 [2022-11-16 11:23:14,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670700659] [2022-11-16 11:23:14,850 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:23:14,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:23:14,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:14,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:23:14,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=403, Unknown=6, NotChecked=270, Total=756 [2022-11-16 11:23:14,852 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 26 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 8 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-16 11:23:16,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:16,259 INFO L93 Difference]: Finished difference Result 146 states and 156 transitions. [2022-11-16 11:23:16,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:23:16,260 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 8 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) Word has length 48 [2022-11-16 11:23:16,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:16,261 INFO L225 Difference]: With dead ends: 146 [2022-11-16 11:23:16,261 INFO L226 Difference]: Without dead ends: 146 [2022-11-16 11:23:16,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=100, Invalid=568, Unknown=6, NotChecked=318, Total=992 [2022-11-16 11:23:16,262 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 70 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 546 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:23:16,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 384 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 628 Invalid, 0 Unknown, 546 Unchecked, 1.0s Time] [2022-11-16 11:23:16,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-16 11:23:16,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 113. [2022-11-16 11:23:16,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 99 states have internal predecessors, (114), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (9), 9 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-16 11:23:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2022-11-16 11:23:16,268 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 48 [2022-11-16 11:23:16,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:16,268 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2022-11-16 11:23:16,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 23 states have internal predecessors, (47), 5 states have call successors, (5), 2 states have call predecessors, (5), 8 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-16 11:23:16,269 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2022-11-16 11:23:16,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-16 11:23:16,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:16,270 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:16,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:16,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:16,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:23:16,685 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:23:16,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:16,685 INFO L85 PathProgramCache]: Analyzing trace with hash 331950041, now seen corresponding path program 1 times [2022-11-16 11:23:16,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:16,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1021284404] [2022-11-16 11:23:16,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:16,686 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 [2022-11-16 11:23:16,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:16,687 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:16,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:16,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:23:16,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:16,966 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 15 treesize of output 11 [2022-11-16 11:23:17,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:17,151 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 23 treesize of output 22 [2022-11-16 11:23:17,457 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 [2022-11-16 11:23:17,482 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:23:17,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 11:23:18,029 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:18,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1021284404] [2022-11-16 11:23:18,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1021284404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:23:18,030 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:23:18,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 20 [2022-11-16 11:23:18,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135615489] [2022-11-16 11:23:18,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:23:18,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:23:18,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:18,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:23:18,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:23:18,031 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand has 21 states, 20 states have (on average 3.05) internal successors, (61), 18 states have internal predecessors, (61), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-16 11:23:20,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:20,723 INFO L93 Difference]: Finished difference Result 158 states and 173 transitions. [2022-11-16 11:23:20,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-16 11:23:20,724 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.05) internal successors, (61), 18 states have internal predecessors, (61), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 47 [2022-11-16 11:23:20,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:20,726 INFO L225 Difference]: With dead ends: 158 [2022-11-16 11:23:20,726 INFO L226 Difference]: Without dead ends: 158 [2022-11-16 11:23:20,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=291, Invalid=1779, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 11:23:20,728 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 320 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:23:20,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 364 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 557 Invalid, 0 Unknown, 51 Unchecked, 1.0s Time] [2022-11-16 11:23:20,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2022-11-16 11:23:20,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 121. [2022-11-16 11:23:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 100 states have (on average 1.21) internal successors, (121), 106 states have internal predecessors, (121), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 9 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-16 11:23:20,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 136 transitions. [2022-11-16 11:23:20,749 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 136 transitions. Word has length 47 [2022-11-16 11:23:20,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:20,749 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 136 transitions. [2022-11-16 11:23:20,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.05) internal successors, (61), 18 states have internal predecessors, (61), 6 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-16 11:23:20,751 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 136 transitions. [2022-11-16 11:23:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-16 11:23:20,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:20,751 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:20,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:20,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:20,966 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:23:20,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:20,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1700516764, now seen corresponding path program 1 times [2022-11-16 11:23:20,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:20,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217039378] [2022-11-16 11:23:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:20,967 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 [2022-11-16 11:23:20,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:20,968 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:20,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:21,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:23:21,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:21,306 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 15 treesize of output 11 [2022-11-16 11:23:21,594 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 28 treesize of output 27 [2022-11-16 11:23:22,109 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 [2022-11-16 11:23:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:23:22,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 11:23:22,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:22,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217039378] [2022-11-16 11:23:22,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217039378] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:23:22,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:23:22,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 21 [2022-11-16 11:23:22,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95661956] [2022-11-16 11:23:22,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:23:22,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:23:22,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:22,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:23:22,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:23:22,946 INFO L87 Difference]: Start difference. First operand 121 states and 136 transitions. Second operand has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 19 states have internal predecessors, (64), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-16 11:23:27,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:23:30,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:30,137 INFO L93 Difference]: Finished difference Result 156 states and 170 transitions. [2022-11-16 11:23:30,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:23:30,138 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 19 states have internal predecessors, (64), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 48 [2022-11-16 11:23:30,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:30,139 INFO L225 Difference]: With dead ends: 156 [2022-11-16 11:23:30,139 INFO L226 Difference]: Without dead ends: 156 [2022-11-16 11:23:30,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=344, Invalid=2106, Unknown=0, NotChecked=0, Total=2450 [2022-11-16 11:23:30,140 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 268 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:23:30,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 248 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 639 Invalid, 1 Unknown, 64 Unchecked, 3.9s Time] [2022-11-16 11:23:30,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-16 11:23:30,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 123. [2022-11-16 11:23:30,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 108 states have internal predecessors, (123), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 9 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-16 11:23:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 138 transitions. [2022-11-16 11:23:30,146 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 138 transitions. Word has length 48 [2022-11-16 11:23:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:30,146 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 138 transitions. [2022-11-16 11:23:30,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 19 states have internal predecessors, (64), 6 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2022-11-16 11:23:30,147 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 138 transitions. [2022-11-16 11:23:30,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-16 11:23:30,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:30,148 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:30,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:30,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:30,355 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:23:30,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:30,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1176412219, now seen corresponding path program 1 times [2022-11-16 11:23:30,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:30,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480712422] [2022-11-16 11:23:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:30,356 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 [2022-11-16 11:23:30,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:30,357 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:30,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-16 11:23:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:30,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 11:23:30,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:30,623 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 [2022-11-16 11:23:30,729 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 15 treesize of output 11 [2022-11-16 11:23:30,825 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 [2022-11-16 11:23:30,933 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-16 11:23:30,933 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 [2022-11-16 11:23:31,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:31,089 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 35 treesize of output 30 [2022-11-16 11:23:31,258 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 [2022-11-16 11:23:31,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:31,761 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 26 treesize of output 32 [2022-11-16 11:23:31,893 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:23:31,893 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2022-11-16 11:23:31,947 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:23:31,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:32,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:32,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480712422] [2022-11-16 11:23:32,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480712422] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:23:32,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1760015182] [2022-11-16 11:23:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:23:32,787 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:23:32,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:23:32,788 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:23:32,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-16 11:23:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:23:33,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-16 11:23:33,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:33,136 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 [2022-11-16 11:23:33,187 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 15 treesize of output 11 [2022-11-16 11:23:33,261 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 [2022-11-16 11:23:33,355 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-16 11:23:33,356 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 [2022-11-16 11:23:33,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:33,444 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 35 treesize of output 30 [2022-11-16 11:23:33,555 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 [2022-11-16 11:23:33,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:23:33,851 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 26 treesize of output 32 [2022-11-16 11:23:33,908 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:23:33,909 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2022-11-16 11:23:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:23:33,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:34,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1760015182] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:23:34,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:23:34,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2022-11-16 11:23:34,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324535205] [2022-11-16 11:23:34,210 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:23:34,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:23:34,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:34,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:23:34,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:23:34,212 INFO L87 Difference]: Start difference. First operand 123 states and 138 transitions. Second operand has 21 states, 20 states have (on average 2.0) internal successors, (40), 18 states have internal predecessors, (40), 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) [2022-11-16 11:23:35,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:35,530 INFO L93 Difference]: Finished difference Result 127 states and 142 transitions. [2022-11-16 11:23:35,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:23:35,531 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.0) internal successors, (40), 18 states have internal predecessors, (40), 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 49 [2022-11-16 11:23:35,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:35,532 INFO L225 Difference]: With dead ends: 127 [2022-11-16 11:23:35,532 INFO L226 Difference]: Without dead ends: 127 [2022-11-16 11:23:35,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 95 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=117, Invalid=1005, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 11:23:35,534 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 23 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:23:35,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 386 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 504 Invalid, 0 Unknown, 103 Unchecked, 0.9s Time] [2022-11-16 11:23:35,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-16 11:23:35,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-11-16 11:23:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 106 states have (on average 1.1981132075471699) internal successors, (127), 112 states have internal predecessors, (127), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (9), 9 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-16 11:23:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 142 transitions. [2022-11-16 11:23:35,540 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 142 transitions. Word has length 49 [2022-11-16 11:23:35,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:35,540 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 142 transitions. [2022-11-16 11:23:35,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.0) internal successors, (40), 18 states have internal predecessors, (40), 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) [2022-11-16 11:23:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 142 transitions. [2022-11-16 11:23:35,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 11:23:35,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:35,541 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:35,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:35,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-16 11:23:35,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:35,945 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:23:35,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:35,946 INFO L85 PathProgramCache]: Analyzing trace with hash -486793996, now seen corresponding path program 2 times [2022-11-16 11:23:35,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:35,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674942998] [2022-11-16 11:23:35,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:23:35,946 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 [2022-11-16 11:23:35,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:35,947 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:35,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-16 11:23:36,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:23:36,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:23:36,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:23:36,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:23:36,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:23:36,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:36,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674942998] [2022-11-16 11:23:36,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674942998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:23:36,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:23:36,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-16 11:23:36,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676475139] [2022-11-16 11:23:36,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:23:36,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:23:36,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:36,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:23:36,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:23:36,711 INFO L87 Difference]: Start difference. First operand 127 states and 142 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:23:37,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:37,487 INFO L93 Difference]: Finished difference Result 373 states and 401 transitions. [2022-11-16 11:23:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:23:37,488 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 52 [2022-11-16 11:23:37,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:37,490 INFO L225 Difference]: With dead ends: 373 [2022-11-16 11:23:37,490 INFO L226 Difference]: Without dead ends: 373 [2022-11-16 11:23:37,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:23:37,491 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 846 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:23:37,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 532 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 11:23:37,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2022-11-16 11:23:37,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 159. [2022-11-16 11:23:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 133 states have (on average 1.1954887218045114) internal successors, (159), 139 states have internal predecessors, (159), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-16 11:23:37,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 189 transitions. [2022-11-16 11:23:37,500 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 189 transitions. Word has length 52 [2022-11-16 11:23:37,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:37,501 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 189 transitions. [2022-11-16 11:23:37,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 14 states have internal predecessors, (54), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 11:23:37,501 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 189 transitions. [2022-11-16 11:23:37,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-16 11:23:37,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:37,502 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:37,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:37,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:37,717 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:23:37,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:37,717 INFO L85 PathProgramCache]: Analyzing trace with hash -436631103, now seen corresponding path program 2 times [2022-11-16 11:23:37,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:37,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343313997] [2022-11-16 11:23:37,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:23:37,718 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 [2022-11-16 11:23:37,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:37,719 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:37,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:23:37,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:23:37,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:23:37,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:23:37,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:37,989 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:23:37,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:23:38,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:38,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343313997] [2022-11-16 11:23:38,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343313997] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:23:38,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:23:38,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-16 11:23:38,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063305093] [2022-11-16 11:23:38,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:23:38,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:23:38,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:38,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:23:38,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:23:38,314 INFO L87 Difference]: Start difference. First operand 159 states and 189 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 11:23:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:23:38,703 INFO L93 Difference]: Finished difference Result 171 states and 199 transitions. [2022-11-16 11:23:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:23:38,704 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 52 [2022-11-16 11:23:38,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:23:38,705 INFO L225 Difference]: With dead ends: 171 [2022-11-16 11:23:38,705 INFO L226 Difference]: Without dead ends: 171 [2022-11-16 11:23:38,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:23:38,706 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 56 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:23:38,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 404 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:23:38,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-16 11:23:38,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2022-11-16 11:23:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 141 states have internal predecessors, (161), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-16 11:23:38,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 191 transitions. [2022-11-16 11:23:38,713 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 191 transitions. Word has length 52 [2022-11-16 11:23:38,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:23:38,714 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 191 transitions. [2022-11-16 11:23:38,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 states have internal predecessors, (65), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 11:23:38,714 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 191 transitions. [2022-11-16 11:23:38,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 11:23:38,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:23:38,715 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:23:38,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 11:23:38,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:23:38,915 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:23:38,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:23:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1304261010, now seen corresponding path program 2 times [2022-11-16 11:23:38,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:23:38,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695460213] [2022-11-16 11:23:38,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:23:38,916 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 [2022-11-16 11:23:38,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:23:38,917 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:23:38,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-16 11:23:39,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:23:39,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:23:39,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:23:39,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:23:39,136 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 [2022-11-16 11:23:39,257 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:23:39,258 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 [2022-11-16 11:23:39,333 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 15 treesize of output 11 [2022-11-16 11:23:41,474 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_60| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_65| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_60|) |v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_65|) |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_60|))) is different from true [2022-11-16 11:23:41,572 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-16 11:23:43,636 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_66| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_61| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_61|) |v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_66|) |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_61|))) is different from true [2022-11-16 11:23:43,881 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 16 treesize of output 8 [2022-11-16 11:23:43,952 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 [2022-11-16 11:23:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2022-11-16 11:23:44,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:23:44,178 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 46 treesize of output 42 [2022-11-16 11:23:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:23:45,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:23:45,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695460213] [2022-11-16 11:23:45,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695460213] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:23:45,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:23:45,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 27 [2022-11-16 11:23:45,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386602267] [2022-11-16 11:23:45,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:23:45,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:23:45,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:23:45,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:23:45,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=588, Unknown=2, NotChecked=98, Total=756 [2022-11-16 11:23:45,304 INFO L87 Difference]: Start difference. First operand 161 states and 191 transitions. Second operand has 28 states, 27 states have (on average 3.0) internal successors, (81), 25 states have internal predecessors, (81), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 11:24:01,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:24:04,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:24:06,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:06,125 INFO L93 Difference]: Finished difference Result 182 states and 217 transitions. [2022-11-16 11:24:06,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:24:06,126 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.0) internal successors, (81), 25 states have internal predecessors, (81), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 54 [2022-11-16 11:24:06,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:06,128 INFO L225 Difference]: With dead ends: 182 [2022-11-16 11:24:06,128 INFO L226 Difference]: Without dead ends: 182 [2022-11-16 11:24:06,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 76 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=269, Invalid=2491, Unknown=4, NotChecked=206, Total=2970 [2022-11-16 11:24:06,130 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 101 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 37 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:06,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 436 Invalid, 1152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 792 Invalid, 2 Unknown, 321 Unchecked, 5.7s Time] [2022-11-16 11:24:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-16 11:24:06,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 167. [2022-11-16 11:24:06,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 141 states have (on average 1.2127659574468086) internal successors, (171), 147 states have internal predecessors, (171), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-16 11:24:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 201 transitions. [2022-11-16 11:24:06,138 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 201 transitions. Word has length 54 [2022-11-16 11:24:06,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:06,138 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 201 transitions. [2022-11-16 11:24:06,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.0) internal successors, (81), 25 states have internal predecessors, (81), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 11:24:06,138 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 201 transitions. [2022-11-16 11:24:06,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 11:24:06,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:06,139 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:06,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:06,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:24:06,353 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:24:06,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:06,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1952504247, now seen corresponding path program 4 times [2022-11-16 11:24:06,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:24:06,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89463422] [2022-11-16 11:24:06,355 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:24:06,355 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 [2022-11-16 11:24:06,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:24:06,356 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:24:06,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:24:06,601 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:24:06,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:24:06,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-16 11:24:06,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:06,634 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 [2022-11-16 11:24:06,651 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 5 [2022-11-16 11:24:06,834 WARN L855 $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_625 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_625))))) is different from true [2022-11-16 11:24:06,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:06,857 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 [2022-11-16 11:24:06,871 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:24:06,871 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 [2022-11-16 11:24:07,026 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_626 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_626) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-16 11:24:07,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:07,051 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 [2022-11-16 11:24:07,064 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:24:07,064 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 [2022-11-16 11:24:07,226 WARN L855 $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_627 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_627) |c_#length|)))) is different from true [2022-11-16 11:24:07,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:07,252 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 [2022-11-16 11:24:07,269 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:24:07,270 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 [2022-11-16 11:24:07,449 WARN L855 $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_628 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_628) |c_#length|)))) is different from true [2022-11-16 11:24:07,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:07,473 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 [2022-11-16 11:24:07,491 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:24:07,491 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 [2022-11-16 11:24:07,675 WARN L855 $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_629 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_629))))) is different from true [2022-11-16 11:24:07,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:07,704 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 [2022-11-16 11:24:07,720 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:24:07,720 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 [2022-11-16 11:24:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 20 trivial. 30 not checked. [2022-11-16 11:24:07,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:08,461 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:24:08,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89463422] [2022-11-16 11:24:08,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89463422] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:08,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1450843967] [2022-11-16 11:24:08,462 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:24:08,462 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:24:08,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:24:08,463 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:24:08,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2022-11-16 11:24:08,816 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:24:08,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:24:08,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 52 conjunts are in the unsatisfiable core [2022-11-16 11:24:08,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:08,859 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 [2022-11-16 11:24:08,870 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 [2022-11-16 11:24:08,971 WARN L855 $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_671 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_671) |c_#length|)))) is different from true [2022-11-16 11:24:08,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:08,993 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 [2022-11-16 11:24:09,006 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:24:09,007 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 [2022-11-16 11:24:09,115 WARN L855 $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_672 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_672))))) is different from true [2022-11-16 11:24:09,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:09,142 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 [2022-11-16 11:24:09,164 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:24:09,164 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 [2022-11-16 11:24:09,278 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_673 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_673) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-16 11:24:09,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:09,308 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 [2022-11-16 11:24:09,327 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:24:09,327 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 [2022-11-16 11:24:09,427 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_674 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_674) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-16 11:24:09,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:09,453 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 [2022-11-16 11:24:09,471 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:24:09,471 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 [2022-11-16 11:24:09,576 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_675 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_675) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-16 11:24:09,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:24:09,607 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 [2022-11-16 11:24:09,626 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:24:09,626 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 [2022-11-16 11:24:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 5 proven. 61 refuted. 0 times theorem prover too weak. 20 trivial. 30 not checked. [2022-11-16 11:24:09,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:10,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1450843967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:10,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:24:10,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 26 [2022-11-16 11:24:10,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423776252] [2022-11-16 11:24:10,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:24:10,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 11:24:10,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:24:10,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 11:24:10,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=297, Unknown=10, NotChecked=430, Total=812 [2022-11-16 11:24:10,087 INFO L87 Difference]: Start difference. First operand 167 states and 201 transitions. Second operand has 27 states, 25 states have (on average 2.08) internal successors, (52), 26 states have internal predecessors, (52), 6 states have call successors, (6), 2 states have call predecessors, (6), 11 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-16 11:24:11,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:24:11,770 INFO L93 Difference]: Finished difference Result 223 states and 252 transitions. [2022-11-16 11:24:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:24:11,772 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.08) internal successors, (52), 26 states have internal predecessors, (52), 6 states have call successors, (6), 2 states have call predecessors, (6), 11 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 58 [2022-11-16 11:24:11,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:24:11,774 INFO L225 Difference]: With dead ends: 223 [2022-11-16 11:24:11,774 INFO L226 Difference]: Without dead ends: 223 [2022-11-16 11:24:11,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=83, Invalid=367, Unknown=10, NotChecked=470, Total=930 [2022-11-16 11:24:11,775 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 87 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1137 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:24:11,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 577 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 754 Invalid, 0 Unknown, 1137 Unchecked, 1.2s Time] [2022-11-16 11:24:11,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-11-16 11:24:11,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 167. [2022-11-16 11:24:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 141 states have (on average 1.2056737588652482) internal successors, (170), 147 states have internal predecessors, (170), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2022-11-16 11:24:11,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 200 transitions. [2022-11-16 11:24:11,782 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 200 transitions. Word has length 58 [2022-11-16 11:24:11,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:24:11,783 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 200 transitions. [2022-11-16 11:24:11,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.08) internal successors, (52), 26 states have internal predecessors, (52), 6 states have call successors, (6), 2 states have call predecessors, (6), 11 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-16 11:24:11,784 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 200 transitions. [2022-11-16 11:24:11,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 11:24:11,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:24:11,785 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:24:11,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:24:12,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2022-11-16 11:24:12,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:24:12,200 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:24:12,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:24:12,201 INFO L85 PathProgramCache]: Analyzing trace with hash -735616619, now seen corresponding path program 2 times [2022-11-16 11:24:12,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:24:12,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933732683] [2022-11-16 11:24:12,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:24:12,201 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 [2022-11-16 11:24:12,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:24:12,203 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:24:12,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-16 11:24:12,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:24:12,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:24:12,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-16 11:24:12,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:12,777 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 15 treesize of output 11 [2022-11-16 11:24:12,968 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-16 11:24:12,969 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 15 [2022-11-16 11:24:23,491 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-16 11:24:23,491 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 50 [2022-11-16 11:24:23,884 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-11-16 11:24:23,884 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 105 treesize of output 94 [2022-11-16 11:24:31,138 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:24:31,138 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 35 [2022-11-16 11:24:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:24:33,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:24:53,188 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:24:53,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933732683] [2022-11-16 11:24:53,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933732683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:24:53,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [961744910] [2022-11-16 11:24:53,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:24:53,189 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:24:53,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:24:53,191 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:24:53,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2022-11-16 11:24:53,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:24:53,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:24:53,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-16 11:24:53,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:24:58,893 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 15 treesize of output 11 [2022-11-16 11:24:59,431 INFO L321 Elim1Store]: treesize reduction 38, result has 2.6 percent of original size [2022-11-16 11:24:59,432 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 [2022-11-16 11:25:06,321 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-16 11:25:06,321 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 50 [2022-11-16 11:25:07,097 INFO L321 Elim1Store]: treesize reduction 90, result has 1.1 percent of original size [2022-11-16 11:25:07,097 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 63 treesize of output 45 [2022-11-16 11:25:09,732 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:25:09,733 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 35 [2022-11-16 11:25:12,543 WARN L855 $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~mem42#1.base_41| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32)) (v_arrayElimCell_155 (_ BitVec 32))) (let ((.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv1 1)))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_41| (_ bv1 1)))) (and (= (store (store (store .cse0 v_arrayElimCell_155 (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~mem42#1.base_41| (_ bv0 1)) |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select .cse1 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_41|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)) (= (_ bv0 1) (select .cse0 v_arrayElimCell_155))))))) is different from true [2022-11-16 11:25:12,568 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:25:12,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:27,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [961744910] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:27,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:25:27,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 45 [2022-11-16 11:25:27,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267141030] [2022-11-16 11:25:27,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:25:27,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-16 11:25:27,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:25:27,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-16 11:25:27,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=3106, Unknown=19, NotChecked=112, Total=3422 [2022-11-16 11:25:27,548 INFO L87 Difference]: Start difference. First operand 167 states and 200 transitions. Second operand has 46 states, 43 states have (on average 2.0) internal successors, (86), 40 states have internal predecessors, (86), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:25:55,812 WARN L855 $PredicateComparison]: unable to prove that (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32))) (exists ((|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)) (exists ((v_arrayElimCell_145 (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_#t~mem42#1.base_37| (_ BitVec 32)) (v_ArrVal_701 (_ BitVec 1))) (let ((.cse1 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv1 1)))) (let ((.cse0 (store .cse1 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_37| v_ArrVal_701))) (and (= (store (store (store .cse0 v_arrayElimCell_145 (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~mem42#1.base_37| (_ bv0 1)) |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select .cse1 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_37|)) (= (_ bv0 1) (select .cse0 v_arrayElimCell_145)))))))) (exists ((|v_ULTIMATE.start_entry_point_#t~mem42#1.base_41| (_ BitVec 32)) (|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32)) (v_arrayElimCell_155 (_ BitVec 32))) (let ((.cse3 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv1 1)))) (let ((.cse2 (store .cse3 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_41| (_ bv1 1)))) (and (= (store (store (store .cse2 v_arrayElimCell_155 (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~mem42#1.base_41| (_ bv0 1)) |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)) |c_#valid|) (= (_ bv0 1) (select .cse3 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_41|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)) (= (_ bv0 1) (select .cse2 v_arrayElimCell_155))))))) is different from true [2022-11-16 11:25:55,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:25:55,942 INFO L93 Difference]: Finished difference Result 174 states and 205 transitions. [2022-11-16 11:25:55,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:25:55,943 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 2.0) internal successors, (86), 40 states have internal predecessors, (86), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 56 [2022-11-16 11:25:55,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:25:55,944 INFO L225 Difference]: With dead ends: 174 [2022-11-16 11:25:55,944 INFO L226 Difference]: Without dead ends: 151 [2022-11-16 11:25:55,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 111 SyntacticMatches, 6 SemanticMatches, 70 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1240 ImplicationChecksByTransitivity, 99.1s TimeCoverageRelationStatistics Valid=262, Invalid=4548, Unknown=28, NotChecked=274, Total=5112 [2022-11-16 11:25:55,947 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 24 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 707 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:25:55,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 646 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 242 Invalid, 0 Unknown, 707 Unchecked, 0.6s Time] [2022-11-16 11:25:55,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-16 11:25:55,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-11-16 11:25:55,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 125 states have (on average 1.224) internal successors, (153), 132 states have internal predecessors, (153), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (18), 13 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-16 11:25:55,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 182 transitions. [2022-11-16 11:25:55,954 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 182 transitions. Word has length 56 [2022-11-16 11:25:55,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:25:55,954 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 182 transitions. [2022-11-16 11:25:55,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 2.0) internal successors, (86), 40 states have internal predecessors, (86), 8 states have call successors, (8), 4 states have call predecessors, (8), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:25:55,955 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 182 transitions. [2022-11-16 11:25:55,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-16 11:25:55,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:25:55,956 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:25:55,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:56,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2022-11-16 11:25:56,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:25:56,370 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:25:56,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:25:56,371 INFO L85 PathProgramCache]: Analyzing trace with hash 499154310, now seen corresponding path program 2 times [2022-11-16 11:25:56,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:25:56,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474394520] [2022-11-16 11:25:56,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:25:56,371 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 [2022-11-16 11:25:56,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:25:56,374 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:25:56,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:25:56,591 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:25:56,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:25:56,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 11:25:56,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:25:56,693 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 [2022-11-16 11:25:56,797 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 15 treesize of output 11 [2022-11-16 11:25:56,928 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 [2022-11-16 11:25:57,051 INFO L321 Elim1Store]: treesize reduction 49, result has 38.0 percent of original size [2022-11-16 11:25:57,051 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 28 treesize of output 45 [2022-11-16 11:25:57,258 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 45 treesize of output 35 [2022-11-16 11:25:57,493 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 [2022-11-16 11:25:58,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:25:58,078 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 28 treesize of output 34 [2022-11-16 11:25:58,243 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:25:58,243 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2022-11-16 11:25:58,317 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:25:58,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:25:59,390 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:25:59,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474394520] [2022-11-16 11:25:59,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474394520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:25:59,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1963845275] [2022-11-16 11:25:59,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:25:59,391 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:25:59,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:25:59,392 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:25:59,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2022-11-16 11:25:59,694 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:25:59,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 1 [2022-11-16 11:25:59,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710901400] [2022-11-16 11:25:59,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:25:59,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:25:59,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:25:59,697 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:25:59,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-11-16 11:25:59,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:25:59,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:25:59,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 11:25:59,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:00,340 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 [2022-11-16 11:26:00,610 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 15 treesize of output 11 [2022-11-16 11:26:00,932 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 [2022-11-16 11:26:01,043 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 11:26:01,043 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 25 treesize of output 39 [2022-11-16 11:26:01,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:01,441 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 39 treesize of output 32 [2022-11-16 11:26:01,822 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 [2022-11-16 11:26:02,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:26:02,189 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 28 treesize of output 34 [2022-11-16 11:26:02,242 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:26:02,243 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2022-11-16 11:26:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:26:02,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:03,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710901400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:26:03,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:03,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 33 [2022-11-16 11:26:03,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799109027] [2022-11-16 11:26:03,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:03,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-16 11:26:03,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:03,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-16 11:26:03,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1810, Unknown=0, NotChecked=0, Total=1980 [2022-11-16 11:26:03,636 INFO L87 Difference]: Start difference. First operand 151 states and 182 transitions. Second operand has 34 states, 32 states have (on average 2.0625) internal successors, (66), 28 states have internal predecessors, (66), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:26:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:26:05,581 INFO L93 Difference]: Finished difference Result 169 states and 200 transitions. [2022-11-16 11:26:05,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:26:05,582 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.0625) internal successors, (66), 28 states have internal predecessors, (66), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 59 [2022-11-16 11:26:05,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:26:05,583 INFO L225 Difference]: With dead ends: 169 [2022-11-16 11:26:05,583 INFO L226 Difference]: Without dead ends: 169 [2022-11-16 11:26:05,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 100 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 741 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=242, Invalid=2514, Unknown=0, NotChecked=0, Total=2756 [2022-11-16 11:26:05,585 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 41 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 105 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:26:05,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 459 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 659 Invalid, 0 Unknown, 105 Unchecked, 1.4s Time] [2022-11-16 11:26:05,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-16 11:26:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-11-16 11:26:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 142 states have (on average 1.204225352112676) internal successors, (171), 148 states have internal predecessors, (171), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-16 11:26:05,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 200 transitions. [2022-11-16 11:26:05,591 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 200 transitions. Word has length 59 [2022-11-16 11:26:05,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:26:05,591 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 200 transitions. [2022-11-16 11:26:05,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.0625) internal successors, (66), 28 states have internal predecessors, (66), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:26:05,592 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 200 transitions. [2022-11-16 11:26:05,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:26:05,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:26:05,592 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:26:05,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:26:05,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-11-16 11:26:05,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:26:05,993 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:26:05,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:26:05,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1129358486, now seen corresponding path program 3 times [2022-11-16 11:26:05,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:26:05,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579629799] [2022-11-16 11:26:05,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:26:05,995 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 [2022-11-16 11:26:05,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:26:05,997 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:26:06,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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)] Waiting until timeout for monitored process [2022-11-16 11:26:06,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 11:26:06,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:26:06,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:26:06,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:26:06,388 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:26:06,388 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 [2022-11-16 11:26:06,500 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 15 treesize of output 11 [2022-11-16 11:26:08,917 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_124| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_93| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_88| (_ BitVec 32))) (and (bvslt (bvadd |v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_124| (_ bv4294967295 32)) (_ bv10 32)) (bvslt |v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_124| (_ bv10 32)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_88|) (bvadd (_ bv4294967292 32) |v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_93| (bvmul (_ bv4 32) |v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_124|))) |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_88|)))) is different from true [2022-11-16 11:26:09,357 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-16 11:26:11,739 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_94| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_125| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_89| (_ BitVec 32))) (and (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_89|) (bvadd |v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_94| (bvmul (_ bv4 32) |v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_125|) (_ bv4294967288 32))) |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_89|)) (bvslt (bvadd |v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_125| (_ bv4294967294 32)) (_ bv10 32)) (bvslt |v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_125| (_ bv10 32)))) is different from true [2022-11-16 11:26:12,969 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 8 [2022-11-16 11:26:13,150 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 [2022-11-16 11:26:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 35 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 12 not checked. [2022-11-16 11:26:13,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:26:13,882 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 46 treesize of output 42 [2022-11-16 11:26:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:26:18,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:26:18,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579629799] [2022-11-16 11:26:18,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579629799] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:26:18,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:26:18,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 40 [2022-11-16 11:26:18,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773030908] [2022-11-16 11:26:18,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:26:18,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-16 11:26:18,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:26:18,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-16 11:26:18,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1340, Unknown=2, NotChecked=150, Total=1640 [2022-11-16 11:26:18,302 INFO L87 Difference]: Start difference. First operand 169 states and 200 transitions. Second operand has 41 states, 38 states have (on average 2.289473684210526) internal successors, (87), 39 states have internal predecessors, (87), 8 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-16 11:26:24,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:26:36,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:26:48,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:27:00,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:00,014 INFO L93 Difference]: Finished difference Result 197 states and 227 transitions. [2022-11-16 11:27:00,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-16 11:27:00,016 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 2.289473684210526) internal successors, (87), 39 states have internal predecessors, (87), 8 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 62 [2022-11-16 11:27:00,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:00,017 INFO L225 Difference]: With dead ends: 197 [2022-11-16 11:27:00,017 INFO L226 Difference]: Without dead ends: 197 [2022-11-16 11:27:00,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 75 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1254 ImplicationChecksByTransitivity, 42.1s TimeCoverageRelationStatistics Valid=732, Invalid=4820, Unknown=6, NotChecked=294, Total=5852 [2022-11-16 11:27:00,019 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 429 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 296 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:00,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 409 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 838 Invalid, 0 Unknown, 296 Unchecked, 9.2s Time] [2022-11-16 11:27:00,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-16 11:27:00,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 171. [2022-11-16 11:27:00,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 144 states have (on average 1.2152777777777777) internal successors, (175), 150 states have internal predecessors, (175), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-16 11:27:00,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 204 transitions. [2022-11-16 11:27:00,026 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 204 transitions. Word has length 62 [2022-11-16 11:27:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:00,026 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 204 transitions. [2022-11-16 11:27:00,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 2.289473684210526) internal successors, (87), 39 states have internal predecessors, (87), 8 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-16 11:27:00,027 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 204 transitions. [2022-11-16 11:27:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 11:27:00,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:00,028 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:00,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:00,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:00,242 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:27:00,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:00,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1129358487, now seen corresponding path program 2 times [2022-11-16 11:27:00,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:27:00,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891952044] [2022-11-16 11:27:00,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:27:00,243 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 [2022-11-16 11:27:00,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:27:00,245 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:27:00,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:27:00,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:27:00,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:00,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:27:00,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 11:27:00,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:01,988 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 36 treesize of output 32 [2022-11-16 11:27:04,769 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 11:27:04,769 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:27:04,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891952044] [2022-11-16 11:27:04,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891952044] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:04,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:04,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 22 [2022-11-16 11:27:04,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259454333] [2022-11-16 11:27:04,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:04,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:27:04,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:27:04,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:27:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:27:04,772 INFO L87 Difference]: Start difference. First operand 171 states and 204 transitions. Second operand has 23 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 21 states have internal predecessors, (80), 9 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-16 11:27:36,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:36,387 INFO L93 Difference]: Finished difference Result 403 states and 430 transitions. [2022-11-16 11:27:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-16 11:27:36,389 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 21 states have internal predecessors, (80), 9 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) Word has length 62 [2022-11-16 11:27:36,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:36,390 INFO L225 Difference]: With dead ends: 403 [2022-11-16 11:27:36,390 INFO L226 Difference]: Without dead ends: 403 [2022-11-16 11:27:36,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 28.2s TimeCoverageRelationStatistics Valid=820, Invalid=3212, Unknown=0, NotChecked=0, Total=4032 [2022-11-16 11:27:36,392 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 891 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:36,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 584 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-16 11:27:36,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-16 11:27:36,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 209. [2022-11-16 11:27:36,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 182 states have (on average 1.2637362637362637) internal successors, (230), 187 states have internal predecessors, (230), 11 states have call successors, (11), 6 states have call predecessors, (11), 7 states have return successors, (18), 15 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-16 11:27:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 259 transitions. [2022-11-16 11:27:36,403 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 259 transitions. Word has length 62 [2022-11-16 11:27:36,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:36,403 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 259 transitions. [2022-11-16 11:27:36,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.6363636363636362) internal successors, (80), 21 states have internal predecessors, (80), 9 states have call successors, (9), 1 states have call predecessors, (9), 3 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2022-11-16 11:27:36,404 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 259 transitions. [2022-11-16 11:27:36,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-16 11:27:36,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:36,405 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:36,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:27:36,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:36,620 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:27:36,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:36,621 INFO L85 PathProgramCache]: Analyzing trace with hash 650374719, now seen corresponding path program 2 times [2022-11-16 11:27:36,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:27:36,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050322733] [2022-11-16 11:27:36,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:27:36,621 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 [2022-11-16 11:27:36,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:27:36,622 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:27:36,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-16 11:27:36,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:27:36,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:36,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:27:36,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:37,000 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 15 treesize of output 11 [2022-11-16 11:27:37,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:27:37,221 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 23 treesize of output 22 [2022-11-16 11:27:37,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:27:37,425 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 23 treesize of output 22 [2022-11-16 11:27:37,881 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 15 treesize of output 7 [2022-11-16 11:27:37,912 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 12 proven. 54 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 11:27:37,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 11:27:39,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:27:39,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050322733] [2022-11-16 11:27:39,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050322733] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:39,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:39,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 25 [2022-11-16 11:27:39,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092332042] [2022-11-16 11:27:39,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:39,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 11:27:39,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:27:39,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 11:27:39,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=562, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:27:39,438 INFO L87 Difference]: Start difference. First operand 209 states and 259 transitions. Second operand has 26 states, 25 states have (on average 3.32) internal successors, (83), 23 states have internal predecessors, (83), 8 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-16 11:27:44,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:27:46,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:27:52,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:27:52,406 INFO L93 Difference]: Finished difference Result 281 states and 314 transitions. [2022-11-16 11:27:52,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-16 11:27:52,408 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.32) internal successors, (83), 23 states have internal predecessors, (83), 8 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) Word has length 63 [2022-11-16 11:27:52,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:27:52,410 INFO L225 Difference]: With dead ends: 281 [2022-11-16 11:27:52,410 INFO L226 Difference]: Without dead ends: 281 [2022-11-16 11:27:52,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 100 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1132 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=750, Invalid=3540, Unknown=0, NotChecked=0, Total=4290 [2022-11-16 11:27:52,412 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 568 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:27:52,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 465 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 815 Invalid, 2 Unknown, 45 Unchecked, 6.0s Time] [2022-11-16 11:27:52,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-11-16 11:27:52,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 213. [2022-11-16 11:27:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 185 states have (on average 1.2432432432432432) internal successors, (230), 191 states have internal predecessors, (230), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (18), 15 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-16 11:27:52,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 259 transitions. [2022-11-16 11:27:52,419 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 259 transitions. Word has length 63 [2022-11-16 11:27:52,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:27:52,420 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 259 transitions. [2022-11-16 11:27:52,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.32) internal successors, (83), 23 states have internal predecessors, (83), 8 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-16 11:27:52,420 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 259 transitions. [2022-11-16 11:27:52,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 11:27:52,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:27:52,421 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:27:52,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-16 11:27:52,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:27:52,635 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:27:52,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1313220106, now seen corresponding path program 2 times [2022-11-16 11:27:52,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:27:52,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477765151] [2022-11-16 11:27:52,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:27:52,636 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 [2022-11-16 11:27:52,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:27:52,636 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:27:52,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:27:52,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:27:52,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:27:52,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:27:52,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:27:53,004 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 15 treesize of output 11 [2022-11-16 11:27:53,301 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 28 treesize of output 27 [2022-11-16 11:27:53,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:27:53,494 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 23 treesize of output 22 [2022-11-16 11:27:54,047 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 [2022-11-16 11:27:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 58 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 11:27:54,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:27:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 11:27:55,842 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:27:55,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477765151] [2022-11-16 11:27:55,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477765151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:27:55,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:27:55,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2022-11-16 11:27:55,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114587743] [2022-11-16 11:27:55,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:27:55,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-16 11:27:55,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:27:55,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-16 11:27:55,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:27:55,845 INFO L87 Difference]: Start difference. First operand 213 states and 259 transitions. Second operand has 27 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 24 states have internal predecessors, (86), 8 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-16 11:28:03,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:28:05,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:28:16,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:16,475 INFO L93 Difference]: Finished difference Result 264 states and 298 transitions. [2022-11-16 11:28:16,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-16 11:28:16,477 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 24 states have internal predecessors, (86), 8 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) Word has length 64 [2022-11-16 11:28:16,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:16,478 INFO L225 Difference]: With dead ends: 264 [2022-11-16 11:28:16,478 INFO L226 Difference]: Without dead ends: 264 [2022-11-16 11:28:16,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 101 SyntacticMatches, 5 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1541 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=788, Invalid=4468, Unknown=0, NotChecked=0, Total=5256 [2022-11-16 11:28:16,480 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 387 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 21 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:16,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 269 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 829 Invalid, 2 Unknown, 64 Unchecked, 7.2s Time] [2022-11-16 11:28:16,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-16 11:28:16,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 216. [2022-11-16 11:28:16,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 188 states have (on average 1.2234042553191489) internal successors, (230), 194 states have internal predecessors, (230), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (18), 15 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-16 11:28:16,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 259 transitions. [2022-11-16 11:28:16,488 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 259 transitions. Word has length 64 [2022-11-16 11:28:16,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:16,488 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 259 transitions. [2022-11-16 11:28:16,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 24 states have internal predecessors, (86), 8 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 10 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-16 11:28:16,489 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 259 transitions. [2022-11-16 11:28:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 11:28:16,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:16,490 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:16,506 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:28:16,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:16,704 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:28:16,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:16,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2055117535, now seen corresponding path program 3 times [2022-11-16 11:28:16,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:28:16,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053437797] [2022-11-16 11:28:16,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:28:16,705 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 [2022-11-16 11:28:16,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:28:16,706 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:28:16,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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)] Waiting until timeout for monitored process [2022-11-16 11:28:16,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 11:28:16,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:28:16,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-16 11:28:16,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:17,035 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 [2022-11-16 11:28:17,148 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 15 treesize of output 11 [2022-11-16 11:28:17,262 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 [2022-11-16 11:28:17,385 INFO L321 Elim1Store]: treesize reduction 49, result has 38.0 percent of original size [2022-11-16 11:28:17,385 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 28 treesize of output 45 [2022-11-16 11:28:17,610 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 45 treesize of output 35 [2022-11-16 11:28:17,820 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 [2022-11-16 11:28:18,024 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-16 11:28:18,024 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 [2022-11-16 11:28:18,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:18,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:18,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:18,286 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:28:18,287 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 43 [2022-11-16 11:28:18,541 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 5 [2022-11-16 11:28:19,230 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 26 treesize of output 32 [2022-11-16 11:28:19,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:19,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 32 [2022-11-16 11:28:19,856 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:28:19,856 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 19 [2022-11-16 11:28:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:28:19,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:22,611 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:28:22,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053437797] [2022-11-16 11:28:22,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053437797] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:28:22,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1762510893] [2022-11-16 11:28:22,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:28:22,612 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:28:22,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:28:22,618 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:28:22,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2022-11-16 11:28:22,962 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 11:28:22,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456813515] [2022-11-16 11:28:22,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:28:22,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:28:22,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:28:22,966 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:28:22,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (51)] Forceful destruction successful, exit code 1 [2022-11-16 11:28:22,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-11-16 11:28:23,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 11:28:23,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:28:23,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-16 11:28:23,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:23,518 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 [2022-11-16 11:28:23,795 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 15 treesize of output 11 [2022-11-16 11:28:24,074 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 [2022-11-16 11:28:24,143 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-16 11:28:24,144 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 [2022-11-16 11:28:24,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:24,486 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 35 treesize of output 30 [2022-11-16 11:28:24,936 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 [2022-11-16 11:28:25,126 INFO L321 Elim1Store]: treesize reduction 34, result has 37.0 percent of original size [2022-11-16 11:28:25,126 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 [2022-11-16 11:28:25,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:25,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:25,659 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:28:25,659 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 46 [2022-11-16 11:28:26,203 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 5 [2022-11-16 11:28:26,634 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 26 treesize of output 32 [2022-11-16 11:28:26,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:26,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 32 [2022-11-16 11:28:27,060 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:28:27,061 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 19 [2022-11-16 11:28:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 64 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:28:27,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:30,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456813515] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:28:30,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:28:30,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 30] total 43 [2022-11-16 11:28:30,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326932689] [2022-11-16 11:28:30,091 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:28:30,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-16 11:28:30,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:28:30,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-16 11:28:30,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=3724, Unknown=0, NotChecked=0, Total=4032 [2022-11-16 11:28:30,093 INFO L87 Difference]: Start difference. First operand 216 states and 259 transitions. Second operand has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 36 states have internal predecessors, (73), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:28:33,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:33,351 INFO L93 Difference]: Finished difference Result 216 states and 258 transitions. [2022-11-16 11:28:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-16 11:28:33,352 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 36 states have internal predecessors, (73), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 65 [2022-11-16 11:28:33,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:33,353 INFO L225 Difference]: With dead ends: 216 [2022-11-16 11:28:33,353 INFO L226 Difference]: Without dead ends: 216 [2022-11-16 11:28:33,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 99 SyntacticMatches, 9 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2032 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=462, Invalid=5238, Unknown=0, NotChecked=0, Total=5700 [2022-11-16 11:28:33,354 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 59 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:33,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 517 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1035 Invalid, 0 Unknown, 213 Unchecked, 2.0s Time] [2022-11-16 11:28:33,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-16 11:28:33,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2022-11-16 11:28:33,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 188 states have (on average 1.2180851063829787) internal successors, (229), 194 states have internal predecessors, (229), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (18), 15 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-16 11:28:33,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2022-11-16 11:28:33,363 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 65 [2022-11-16 11:28:33,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:33,364 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2022-11-16 11:28:33,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 1.7380952380952381) internal successors, (73), 36 states have internal predecessors, (73), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:28:33,364 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2022-11-16 11:28:33,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:28:33,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:33,367 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:33,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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)] Forceful destruction successful, exit code 0 [2022-11-16 11:28:33,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-11-16 11:28:33,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:28:33,781 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:28:33,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:33,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1710505780, now seen corresponding path program 5 times [2022-11-16 11:28:33,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:28:33,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643617410] [2022-11-16 11:28:33,781 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:28:33,782 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 [2022-11-16 11:28:33,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:28:33,783 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:28:33,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:28:34,142 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-16 11:28:34,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:28:34,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-16 11:28:34,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:34,188 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 [2022-11-16 11:28:34,197 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 [2022-11-16 11:28:34,376 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_1123 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1123))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-16 11:28:34,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:34,396 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 [2022-11-16 11:28:34,408 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:28:34,408 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 [2022-11-16 11:28:34,546 WARN L855 $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_1124 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1124) |c_#length|)))) is different from true [2022-11-16 11:28:34,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:34,568 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 [2022-11-16 11:28:34,581 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:28:34,581 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 [2022-11-16 11:28:34,728 WARN L855 $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_1125 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1125) |c_#length|)))) is different from true [2022-11-16 11:28:34,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:34,752 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 [2022-11-16 11:28:34,763 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:28:34,764 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 [2022-11-16 11:28:34,948 WARN L855 $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_1126 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1126) |c_#length|)))) is different from true [2022-11-16 11:28:34,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:34,970 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 [2022-11-16 11:28:34,987 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:28:34,988 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 [2022-11-16 11:28:35,175 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_1127 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1127) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-16 11:28:35,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:35,199 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 [2022-11-16 11:28:35,212 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:28:35,212 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 [2022-11-16 11:28:35,404 WARN L855 $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_1128 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1128))))) is different from true [2022-11-16 11:28:35,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:35,423 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 [2022-11-16 11:28:35,435 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:28:35,436 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 [2022-11-16 11:28:35,515 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 6 proven. 91 refuted. 0 times theorem prover too weak. 30 trivial. 42 not checked. [2022-11-16 11:28:35,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:41,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:28:41,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643617410] [2022-11-16 11:28:41,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643617410] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:28:41,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1831526164] [2022-11-16 11:28:41,722 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:28:41,723 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:28:41,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:28:41,734 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:28:41,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (54)] Waiting until timeout for monitored process [2022-11-16 11:28:42,366 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-11-16 11:28:42,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:28:42,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-16 11:28:42,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:42,390 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 [2022-11-16 11:28:42,818 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-16 11:28:42,818 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 [2022-11-16 11:28:43,416 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_1179 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1179) |c_#length|)) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-11-16 11:28:43,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:43,498 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-16 11:28:43,498 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 24 treesize of output 31 [2022-11-16 11:28:43,525 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:28:43,525 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 [2022-11-16 11:28:43,789 WARN L855 $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_1181 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1181) |c_#length|)) (exists ((v_ArrVal_1180 (_ BitVec 1))) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_1180))))) is different from true [2022-11-16 11:28:43,862 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 11:28:43,862 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 [2022-11-16 11:28:43,872 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 [2022-11-16 11:28:43,973 WARN L855 $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_1183 (_ BitVec 1))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| v_ArrVal_1183) |c_#valid|)) (exists ((v_ArrVal_1182 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1182) |c_#length|)))) is different from true [2022-11-16 11:28:44,029 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 11:28:44,029 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 [2022-11-16 11:28:44,039 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 [2022-11-16 11:28:44,150 WARN L855 $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_1184 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1184))))) is different from true [2022-11-16 11:28:44,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:44,169 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 [2022-11-16 11:28:44,181 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:28:44,181 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 [2022-11-16 11:28:44,277 WARN L855 $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_1185 (_ BitVec 32))) (= (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_1185) |c_#length|)))) is different from true [2022-11-16 11:28:44,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:44,294 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 [2022-11-16 11:28:44,311 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:28:44,311 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 [2022-11-16 11:28:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 12 proven. 97 refuted. 0 times theorem prover too weak. 20 trivial. 40 not checked. [2022-11-16 11:28:44,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:46,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1831526164] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:28:46,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:28:46,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27] total 39 [2022-11-16 11:28:46,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115134431] [2022-11-16 11:28:46,863 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:28:46,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-16 11:28:46,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:28:46,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-16 11:28:46,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=845, Unknown=12, NotChecked=748, Total=1722 [2022-11-16 11:28:46,864 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand has 40 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 36 states have internal predecessors, (81), 9 states have call successors, (9), 3 states have call predecessors, (9), 14 states have return successors, (14), 12 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-16 11:28:49,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:49,968 INFO L93 Difference]: Finished difference Result 287 states and 325 transitions. [2022-11-16 11:28:49,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:28:49,969 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 36 states have internal predecessors, (81), 9 states have call successors, (9), 3 states have call predecessors, (9), 14 states have return successors, (14), 12 states have call predecessors, (14), 9 states have call successors, (14) Word has length 68 [2022-11-16 11:28:49,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:49,971 INFO L225 Difference]: With dead ends: 287 [2022-11-16 11:28:49,971 INFO L226 Difference]: Without dead ends: 287 [2022-11-16 11:28:49,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=156, Invalid=1208, Unknown=12, NotChecked=880, Total=2256 [2022-11-16 11:28:49,972 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 94 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1364 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:49,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 946 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1325 Invalid, 0 Unknown, 1364 Unchecked, 2.0s Time] [2022-11-16 11:28:49,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-16 11:28:49,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2022-11-16 11:28:49,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 188 states have (on average 1.2127659574468086) internal successors, (228), 194 states have internal predecessors, (228), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (18), 15 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-16 11:28:49,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 257 transitions. [2022-11-16 11:28:49,979 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 257 transitions. Word has length 68 [2022-11-16 11:28:49,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:49,979 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 257 transitions. [2022-11-16 11:28:49,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 38 states have (on average 2.1315789473684212) internal successors, (81), 36 states have internal predecessors, (81), 9 states have call successors, (9), 3 states have call predecessors, (9), 14 states have return successors, (14), 12 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-16 11:28:49,980 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 257 transitions. [2022-11-16 11:28:49,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-16 11:28:49,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:49,981 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:49,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:28:50,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (54)] Forceful destruction successful, exit code 0 [2022-11-16 11:28:50,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 11:28:50,394 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:28:50,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:50,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1385006831, now seen corresponding path program 4 times [2022-11-16 11:28:50,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:28:50,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345754477] [2022-11-16 11:28:50,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:28:50,395 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 [2022-11-16 11:28:50,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:28:50,396 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:28:50,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:28:50,639 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:28:50,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:28:50,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-16 11:28:50,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:50,822 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 [2022-11-16 11:28:50,934 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 15 treesize of output 11 [2022-11-16 11:28:51,042 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 [2022-11-16 11:28:51,144 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 11:28:51,144 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 25 treesize of output 39 [2022-11-16 11:28:51,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:51,321 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 39 treesize of output 32 [2022-11-16 11:28:51,526 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 [2022-11-16 11:28:52,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:52,038 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 28 treesize of output 34 [2022-11-16 11:28:52,186 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:28:52,187 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2022-11-16 11:28:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 73 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 11:28:52,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:53,209 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:28:53,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345754477] [2022-11-16 11:28:53,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345754477] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:28:53,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [604640517] [2022-11-16 11:28:53,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:28:53,209 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:28:53,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:28:53,210 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:28:53,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (56)] Waiting until timeout for monitored process [2022-11-16 11:28:53,702 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:28:53,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:28:53,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-16 11:28:53,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:53,805 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 [2022-11-16 11:28:53,852 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 15 treesize of output 11 [2022-11-16 11:28:53,923 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 [2022-11-16 11:28:54,010 INFO L321 Elim1Store]: treesize reduction 40, result has 37.5 percent of original size [2022-11-16 11:28:54,010 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 25 treesize of output 39 [2022-11-16 11:28:54,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:54,071 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 39 treesize of output 32 [2022-11-16 11:28:54,133 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 [2022-11-16 11:28:54,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:28:54,499 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 28 treesize of output 34 [2022-11-16 11:28:54,558 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:28:54,558 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 15 [2022-11-16 11:28:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 30 proven. 73 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 11:28:54,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:54,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [604640517] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:28:54,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:28:54,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2022-11-16 11:28:54,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326121645] [2022-11-16 11:28:54,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:28:54,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:28:54,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:28:54,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:28:54,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:28:54,871 INFO L87 Difference]: Start difference. First operand 216 states and 257 transitions. Second operand has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 20 states have internal predecessors, (52), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:28:56,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:56,452 INFO L93 Difference]: Finished difference Result 234 states and 275 transitions. [2022-11-16 11:28:56,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:28:56,453 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 20 states have internal predecessors, (52), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 69 [2022-11-16 11:28:56,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:56,454 INFO L225 Difference]: With dead ends: 234 [2022-11-16 11:28:56,454 INFO L226 Difference]: Without dead ends: 234 [2022-11-16 11:28:56,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 136 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 11:28:56,455 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 31 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:56,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 542 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 647 Invalid, 0 Unknown, 183 Unchecked, 1.1s Time] [2022-11-16 11:28:56,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-16 11:28:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2022-11-16 11:28:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 205 states have (on average 1.2) internal successors, (246), 210 states have internal predecessors, (246), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (18), 16 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-16 11:28:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 275 transitions. [2022-11-16 11:28:56,463 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 275 transitions. Word has length 69 [2022-11-16 11:28:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:56,463 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 275 transitions. [2022-11-16 11:28:56,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 20 states have internal predecessors, (52), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 11:28:56,464 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 275 transitions. [2022-11-16 11:28:56,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 11:28:56,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:56,465 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:56,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (56)] Forceful destruction successful, exit code 0 [2022-11-16 11:28:56,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:28:56,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:56,870 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:28:56,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:56,870 INFO L85 PathProgramCache]: Analyzing trace with hash 752407323, now seen corresponding path program 4 times [2022-11-16 11:28:56,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:28:56,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225267687] [2022-11-16 11:28:56,871 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:28:56,871 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 [2022-11-16 11:28:56,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:28:56,872 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:28:56,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:28:57,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:28:57,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:28:57,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:28:57,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:28:57,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:28:57,684 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-16 11:28:57,684 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:28:57,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225267687] [2022-11-16 11:28:57,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225267687] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:28:57,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:28:57,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-16 11:28:57,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71475357] [2022-11-16 11:28:57,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:28:57,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:28:57,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:28:57,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:28:57,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:28:57,686 INFO L87 Difference]: Start difference. First operand 234 states and 275 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:28:58,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:28:58,208 INFO L93 Difference]: Finished difference Result 230 states and 261 transitions. [2022-11-16 11:28:58,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:28:58,209 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Word has length 68 [2022-11-16 11:28:58,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:28:58,210 INFO L225 Difference]: With dead ends: 230 [2022-11-16 11:28:58,210 INFO L226 Difference]: Without dead ends: 230 [2022-11-16 11:28:58,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:28:58,211 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 58 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:28:58,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 534 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:28:58,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-16 11:28:58,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 220. [2022-11-16 11:28:58,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 191 states have (on average 1.1727748691099475) internal successors, (224), 196 states have internal predecessors, (224), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (18), 16 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-16 11:28:58,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 253 transitions. [2022-11-16 11:28:58,218 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 253 transitions. Word has length 68 [2022-11-16 11:28:58,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:28:58,218 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 253 transitions. [2022-11-16 11:28:58,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 11:28:58,219 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 253 transitions. [2022-11-16 11:28:58,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-16 11:28:58,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:28:58,220 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:58,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:28:58,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:28:58,422 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:28:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:58,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1508887660, now seen corresponding path program 3 times [2022-11-16 11:28:58,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:28:58,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384257425] [2022-11-16 11:28:58,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:28:58,423 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 [2022-11-16 11:28:58,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:28:58,425 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:28:58,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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)] Waiting until timeout for monitored process [2022-11-16 11:28:58,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 11:28:58,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:28:58,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 11:28:58,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:28:58,667 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 [2022-11-16 11:28:58,732 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 11:28:58,732 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 [2022-11-16 11:28:58,770 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 15 treesize of output 11 [2022-11-16 11:29:00,897 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_128| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_191| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_149| (_ BitVec 32))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_128|) (bvadd (_ bv4294967292 32) (bvmul (_ bv4 32) |v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_191|) |v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_149|)) |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_128|))) is different from true [2022-11-16 11:29:09,692 INFO L321 Elim1Store]: treesize reduction 51, result has 36.3 percent of original size [2022-11-16 11:29:09,692 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 61 [2022-11-16 11:29:11,812 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_150| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_129| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_192| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_129| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_129|) (bvadd (bvmul (_ bv4 32) |v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_192|) (_ bv4294967288 32) |v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_150|))))) is different from true [2022-11-16 11:29:12,005 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28 [2022-11-16 11:29:14,139 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_151| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_130| (_ BitVec 32)) (|v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_193| (_ BitVec 32))) (not (= |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_130| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_entry_point_~array~0#1.base_BEFORE_CALL_130|) (bvadd (bvmul (_ bv4 32) |v_ULTIMATE.start_entry_point_~i~0#1_BEFORE_CALL_193|) (_ bv4294967284 32) |v_ULTIMATE.start_entry_point_~array~0#1.offset_BEFORE_CALL_151|))))) is different from true [2022-11-16 11:29:14,846 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 8 [2022-11-16 11:29:14,970 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 14 treesize of output 20 [2022-11-16 11:29:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 30 not checked. [2022-11-16 11:29:15,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:29:15,622 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 46 treesize of output 42 [2022-11-16 11:29:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 2 proven. 71 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 11:29:18,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:29:18,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384257425] [2022-11-16 11:29:18,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384257425] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:29:18,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:29:18,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20] total 36 [2022-11-16 11:29:18,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287668743] [2022-11-16 11:29:18,087 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:29:18,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-16 11:29:18,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:29:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-16 11:29:18,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1023, Unknown=4, NotChecked=198, Total=1332 [2022-11-16 11:29:18,090 INFO L87 Difference]: Start difference. First operand 220 states and 253 transitions. Second operand has 37 states, 36 states have (on average 2.8055555555555554) internal successors, (101), 35 states have internal predecessors, (101), 8 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:30:26,744 WARN L233 SmtUtils]: Spent 6.08s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:30:46,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:30:53,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:30:53,249 INFO L93 Difference]: Finished difference Result 263 states and 297 transitions. [2022-11-16 11:30:53,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-16 11:30:53,251 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.8055555555555554) internal successors, (101), 35 states have internal predecessors, (101), 8 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 70 [2022-11-16 11:30:53,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:30:53,253 INFO L225 Difference]: With dead ends: 263 [2022-11-16 11:30:53,253 INFO L226 Difference]: Without dead ends: 263 [2022-11-16 11:30:53,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 101 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1456 ImplicationChecksByTransitivity, 103.2s TimeCoverageRelationStatistics Valid=631, Invalid=5998, Unknown=25, NotChecked=486, Total=7140 [2022-11-16 11:30:53,254 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 204 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 56 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 501 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:30:53,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 580 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1048 Invalid, 1 Unknown, 501 Unchecked, 5.2s Time] [2022-11-16 11:30:53,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-11-16 11:30:53,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 228. [2022-11-16 11:30:53,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 204 states have internal predecessors, (238), 11 states have call successors, (11), 7 states have call predecessors, (11), 9 states have return successors, (18), 16 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-16 11:30:53,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 267 transitions. [2022-11-16 11:30:53,262 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 267 transitions. Word has length 70 [2022-11-16 11:30:53,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:30:53,262 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 267 transitions. [2022-11-16 11:30:53,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.8055555555555554) internal successors, (101), 35 states have internal predecessors, (101), 8 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:30:53,263 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 267 transitions. [2022-11-16 11:30:53,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 11:30:53,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:30:53,264 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:30:53,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 11:30:53,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:30:53,474 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2022-11-16 11:30:53,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:30:53,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1657901585, now seen corresponding path program 3 times [2022-11-16 11:30:53,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:30:53,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1359539211] [2022-11-16 11:30:53,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:30:53,476 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 [2022-11-16 11:30:53,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:30:53,476 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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) [2022-11-16 11:30:53,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 11:30:53,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 11:30:53,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:30:53,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 58 conjunts are in the unsatisfiable core [2022-11-16 11:30:53,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:30:54,083 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 15 treesize of output 11 [2022-11-16 11:30:54,379 INFO L321 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-11-16 11:30:54,379 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 51 treesize of output 43 [2022-11-16 11:30:54,854 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 55 [2022-11-16 11:30:55,415 INFO L321 Elim1Store]: treesize reduction 56, result has 16.4 percent of original size [2022-11-16 11:30:55,415 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 347 treesize of output 322 [2022-11-16 11:30:56,286 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:30:56,286 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 127 treesize of output 84 [2022-11-16 11:30:57,275 INFO L321 Elim1Store]: treesize reduction 126, result has 11.3 percent of original size [2022-11-16 11:30:57,277 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 1472 treesize of output 1419 [2022-11-16 11:31:02,163 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:31:02,164 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 3 new quantified variables, introduced 3 case distinctions, treesize of input 149 treesize of output 55 [2022-11-16 11:31:13,958 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)) (exists ((|v_ULTIMATE.start_entry_point_#t~mem42#1.base_86| (_ BitVec 32)) (v_ArrVal_1386 (_ BitVec 1)) (v_ArrVal_1385 (_ BitVec 1)) (v_ArrVal_1384 (_ BitVec 1)) (v_arrayElimCell_287 (_ BitVec 32)) (v_arrayElimCell_286 (_ BitVec 32))) (let ((.cse2 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| v_ArrVal_1385))) (let ((.cse1 (store .cse2 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_86| v_ArrVal_1384))) (let ((.cse0 (store .cse1 v_arrayElimCell_287 v_ArrVal_1386))) (and (= (_ bv0 1) (select .cse0 v_arrayElimCell_286)) (= (_ bv0 1) (select .cse1 v_arrayElimCell_287)) (= (select .cse2 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_86|) (_ bv0 1)) (= |c_#valid| (store (store (store (store .cse0 v_arrayElimCell_286 (_ bv0 1)) v_arrayElimCell_287 (_ bv0 1)) |v_ULTIMATE.start_entry_point_#t~mem42#1.base_86| (_ bv0 1)) |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)))))))))) is different from true [2022-11-16 11:31:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-16 11:31:13,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:31:28,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:31:28,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1359539211] [2022-11-16 11:31:28,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1359539211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:31:28,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1363591441] [2022-11-16 11:31:28,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:31:28,677 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 11:31:28,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 11:31:28,679 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 11:31:28,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7254398e-9603-49df-8ee1-4f0b49160394/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (60)] Waiting until timeout for monitored process [2022-11-16 11:31:29,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 11:31:29,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:31:29,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 81 conjunts are in the unsatisfiable core [2022-11-16 11:31:29,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:31:36,537 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 15 treesize of output 11 [2022-11-16 11:31:36,550 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 15 treesize of output 11 [2022-11-16 11:31:38,133 INFO L321 Elim1Store]: treesize reduction 34, result has 12.8 percent of original size [2022-11-16 11:31:38,133 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 69 treesize of output 64 [2022-11-16 11:31:46,927 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:31:52,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:31:52,485 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 76 [2022-11-16 11:31:52,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:31:52,508 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-16 11:31:54,964 INFO L321 Elim1Store]: treesize reduction 70, result has 6.7 percent of original size [2022-11-16 11:31:54,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 171 treesize of output 158 [2022-11-16 11:32:06,596 WARN L233 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:32:19,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:32:19,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:32:19,804 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 109 [2022-11-16 11:32:19,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:32:19,905 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-16 11:32:22,501 INFO L321 Elim1Store]: treesize reduction 138, result has 7.4 percent of original size [2022-11-16 11:32:22,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 949 treesize of output 901 [2022-11-16 11:33:10,068 WARN L233 SmtUtils]: Spent 29.80s on a formula simplification. DAG size of input: 106 DAG size of output: 84 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:33:33,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:33,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:33:33,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:33,787 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:33:33,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:33,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 85 [2022-11-16 11:33:33,800 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 11:33:33,801 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 11:33:54,976 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1370 (_ BitVec 1)) (|v_ULTIMATE.start_entry_point_#t~mem42#1.base_92| (_ BitVec 32)) (v_ArrVal_1440 (_ BitVec 1)) (|ULTIMATE.start_entry_point_~array~0#1.base| (_ BitVec 32)) (v_arrayElimCell_308 (_ BitVec 32)) (v_arrayElimCell_307 (_ BitVec 32))) (let ((.cse3 (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base| v_ArrVal_1370))) (let ((.cse4 (store .cse3 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_92| v_ArrVal_1440))) (let ((.cse2 (store .cse4 v_arrayElimCell_307 (_ bv1 1)))) (let ((.cse0 (store (store .cse2 v_arrayElimCell_308 (_ bv0 1)) v_arrayElimCell_307 (_ bv0 1)))) (let ((.cse1 (store .cse0 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_92| (_ bv0 1)))) (and (= (bvadd (select .cse0 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_92|) (_ bv1 1)) (_ bv0 1)) (= (_ bv0 1) (bvadd (_ bv1 1) (select .cse1 |ULTIMATE.start_entry_point_~array~0#1.base|))) (not (= |v_ULTIMATE.start_entry_point_#t~mem42#1.base_92| (_ bv0 32))) (not (= v_arrayElimCell_307 (_ bv0 32))) (= (select .cse2 v_arrayElimCell_308) (_ bv0 1)) (not (= |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 32))) (= (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_entry_point_~array~0#1.base|) (_ bv0 1)) (= (_ bv0 1) (select .cse3 |v_ULTIMATE.start_entry_point_#t~mem42#1.base_92|)) (= (_ bv0 1) (select .cse4 v_arrayElimCell_307)) (= (store .cse1 |ULTIMATE.start_entry_point_~array~0#1.base| (_ bv0 1)) |c_#valid|)))))))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| (_ bv0 32)))) is different from true [2022-11-16 11:33:55,058 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 11:33:55,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:07,905 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 45 treesize of output 43 [2022-11-16 11:34:07,951 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 45 treesize of output 43 [2022-11-16 11:34:07,985 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 45 treesize of output 43 [2022-11-16 11:35:42,892 WARN L233 SmtUtils]: Spent 7.39s on a formula simplification that was a NOOP. DAG size: 166 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:36:09,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1363591441] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:36:09,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:36:09,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 39] total 68 [2022-11-16 11:36:09,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367023529] [2022-11-16 11:36:09,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:09,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-11-16 11:36:09,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:09,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-11-16 11:36:09,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=843, Invalid=10259, Unknown=36, NotChecked=418, Total=11556 [2022-11-16 11:36:09,272 INFO L87 Difference]: Start difference. First operand 228 states and 267 transitions. Second operand has 69 states, 66 states have (on average 1.6363636363636365) internal successors, (108), 61 states have internal predecessors, (108), 10 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10)