./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/array01-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array01-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c01598788c0e593641b4d52eb46aec8832108f2ffb3b67e30286093c8a1926f8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:34:57,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:34:57,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:34:57,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:34:57,109 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:34:57,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:34:57,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:34:57,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:34:57,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:34:57,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:34:57,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:34:57,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:34:57,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:34:57,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:34:57,124 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:34:57,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:34:57,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:34:57,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:34:57,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:34:57,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:34:57,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:34:57,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:34:57,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:34:57,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:34:57,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:34:57,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:34:57,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:34:57,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:34:57,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:34:57,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:34:57,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:34:57,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:34:57,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:34:57,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:34:57,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:34:57,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:34:57,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:34:57,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:34:57,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:34:57,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:34:57,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:34:57,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:34:57,183 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:34:57,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:34:57,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:34:57,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:34:57,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:34:57,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:34:57,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:34:57,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:34:57,186 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:34:57,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:34:57,187 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:34:57,187 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:34:57,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:34:57,187 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:34:57,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:34:57,188 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:34:57,188 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:34:57,188 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:34:57,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:34:57,189 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:34:57,189 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:34:57,189 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:34:57,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:34:57,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:34:57,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:34:57,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:34:57,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:34:57,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:34:57,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:34:57,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:34:57,192 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_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c01598788c0e593641b4d52eb46aec8832108f2ffb3b67e30286093c8a1926f8 [2022-11-18 20:34:57,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:34:57,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:34:57,500 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:34:57,504 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:34:57,505 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:34:57,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2022-11-18 20:34:57,570 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/data/d737e84f3/02f9c743a7a242b9a1964a88339355dc/FLAG8562c762b [2022-11-18 20:34:58,119 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:34:58,119 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2022-11-18 20:34:58,129 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/data/d737e84f3/02f9c743a7a242b9a1964a88339355dc/FLAG8562c762b [2022-11-18 20:34:58,454 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/data/d737e84f3/02f9c743a7a242b9a1964a88339355dc [2022-11-18 20:34:58,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:34:58,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:34:58,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:34:58,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:34:58,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:34:58,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:58" (1/1) ... [2022-11-18 20:34:58,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f2dfd2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:58, skipping insertion in model container [2022-11-18 20:34:58,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:34:58" (1/1) ... [2022-11-18 20:34:58,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:34:58,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:34:58,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:34:58,946 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-18 20:34:58,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@769bd4de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:34:58, skipping insertion in model container [2022-11-18 20:34:58,947 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:34:58,947 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 20:34:58,950 INFO L158 Benchmark]: Toolchain (without parser) took 490.19ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 88.5MB in the end (delta: 644.6kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-18 20:34:58,951 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory is still 68.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:34:58,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.58ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 88.5MB in the end (delta: 644.6kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-18 20:34:58,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 115.3MB. Free memory is still 68.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 487.58ms. Allocated memory is still 115.3MB. Free memory was 89.2MB in the beginning and 88.5MB in the end (delta: 644.6kB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 529]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array01-alloca-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c01598788c0e593641b4d52eb46aec8832108f2ffb3b67e30286093c8a1926f8 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:35:01,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:35:01,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:35:01,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:35:01,048 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:35:01,058 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:35:01,059 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:35:01,061 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:35:01,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:35:01,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:35:01,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:35:01,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:35:01,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:35:01,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:35:01,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:35:01,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:35:01,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:35:01,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:35:01,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:35:01,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:35:01,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:35:01,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:35:01,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:35:01,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:35:01,098 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:35:01,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:35:01,099 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:35:01,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:35:01,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:35:01,110 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:35:01,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:35:01,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:35:01,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:35:01,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:35:01,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:35:01,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:35:01,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:35:01,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:35:01,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:35:01,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:35:01,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:35:01,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 20:35:01,179 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:35:01,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:35:01,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:35:01,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:35:01,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:35:01,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:35:01,185 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:35:01,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:35:01,186 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:35:01,186 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:35:01,187 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:35:01,187 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:35:01,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:35:01,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:35:01,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:35:01,188 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:35:01,188 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:35:01,188 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:35:01,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:35:01,189 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:35:01,189 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 20:35:01,189 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 20:35:01,190 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:35:01,190 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:35:01,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:35:01,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:35:01,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:35:01,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:35:01,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:35:01,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:35:01,191 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 20:35:01,192 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 20:35:01,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 20:35:01,192 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_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c01598788c0e593641b4d52eb46aec8832108f2ffb3b67e30286093c8a1926f8 [2022-11-18 20:35:01,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:35:01,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:35:01,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:35:01,644 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:35:01,647 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:35:01,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2022-11-18 20:35:01,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/data/3c68e2b48/425fc26229c244eda4e2e4235e76aff5/FLAG885bcf278 [2022-11-18 20:35:02,308 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:35:02,309 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/sv-benchmarks/c/array-memsafety/array01-alloca-2.i [2022-11-18 20:35:02,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/data/3c68e2b48/425fc26229c244eda4e2e4235e76aff5/FLAG885bcf278 [2022-11-18 20:35:02,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/data/3c68e2b48/425fc26229c244eda4e2e4235e76aff5 [2022-11-18 20:35:02,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:35:02,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:35:02,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:35:02,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:35:02,748 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:35:02,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:02" (1/1) ... [2022-11-18 20:35:02,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70af128d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:02, skipping insertion in model container [2022-11-18 20:35:02,750 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:02" (1/1) ... [2022-11-18 20:35:02,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:35:02,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:35:03,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:35:03,134 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 20:35:03,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:35:03,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:35:03,203 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:35:03,269 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:35:03,301 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:35:03,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:03 WrapperNode [2022-11-18 20:35:03,302 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:35:03,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:35:03,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:35:03,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:35:03,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:03" (1/1) ... [2022-11-18 20:35:03,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:03" (1/1) ... [2022-11-18 20:35:03,352 INFO L138 Inliner]: procedures = 117, calls = 9, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2022-11-18 20:35:03,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:35:03,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:35:03,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:35:03,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:35:03,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:03" (1/1) ... [2022-11-18 20:35:03,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:03" (1/1) ... [2022-11-18 20:35:03,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:03" (1/1) ... [2022-11-18 20:35:03,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:03" (1/1) ... [2022-11-18 20:35:03,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:03" (1/1) ... [2022-11-18 20:35:03,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:03" (1/1) ... [2022-11-18 20:35:03,396 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:03" (1/1) ... [2022-11-18 20:35:03,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:03" (1/1) ... [2022-11-18 20:35:03,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:35:03,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:35:03,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:35:03,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:35:03,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:03" (1/1) ... [2022-11-18 20:35:03,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:35:03,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:03,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:35:03,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:35:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 20:35:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:35:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:35:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 20:35:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:35:03,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:35:03,603 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:35:03,612 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:35:03,917 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:35:03,923 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:35:03,924 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:35:03,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:03 BoogieIcfgContainer [2022-11-18 20:35:03,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:35:03,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:35:03,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:35:03,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:35:03,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:35:02" (1/3) ... [2022-11-18 20:35:03,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd89a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:03, skipping insertion in model container [2022-11-18 20:35:03,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:03" (2/3) ... [2022-11-18 20:35:03,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd89a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:03, skipping insertion in model container [2022-11-18 20:35:03,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:03" (3/3) ... [2022-11-18 20:35:03,935 INFO L112 eAbstractionObserver]: Analyzing ICFG array01-alloca-2.i [2022-11-18 20:35:03,955 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:35:03,955 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2022-11-18 20:35:04,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:35:04,023 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;@6f9a4912, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:35:04,023 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-18 20:35:04,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:35:04,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:04,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:35:04,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:04,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:04,046 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-11-18 20:35:04,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:04,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292247861] [2022-11-18 20:35:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:04,063 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:04,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:04,074 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:04,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 20:35:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:04,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:35:04,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:04,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 20:35:04,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:04,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:04,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:04,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292247861] [2022-11-18 20:35:04,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292247861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:04,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:04,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:35:04,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039754965] [2022-11-18 20:35:04,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:04,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:35:04,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:04,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:35:04,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:35:04,468 INFO L87 Difference]: Start difference. First operand has 31 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:04,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:04,573 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-11-18 20:35:04,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:35:04,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 20:35:04,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:04,587 INFO L225 Difference]: With dead ends: 30 [2022-11-18 20:35:04,588 INFO L226 Difference]: Without dead ends: 28 [2022-11-18 20:35:04,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:35:04,597 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 23 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:04,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 26 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:35:04,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-18 20:35:04,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-18 20:35:04,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.55) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:04,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2022-11-18 20:35:04,647 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 6 [2022-11-18 20:35:04,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:04,647 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2022-11-18 20:35:04,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:04,648 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2022-11-18 20:35:04,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:35:04,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:04,650 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:35:04,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:04,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:04,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:04,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:04,867 INFO L85 PathProgramCache]: Analyzing trace with hash 889508874, now seen corresponding path program 1 times [2022-11-18 20:35:04,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:04,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99400283] [2022-11-18 20:35:04,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:04,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:04,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:04,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:04,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 20:35:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:04,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:35:04,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:05,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:35:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:05,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:05,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:05,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99400283] [2022-11-18 20:35:05,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99400283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:05,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:05,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:05,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138761783] [2022-11-18 20:35:05,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:05,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:05,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:05,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:05,080 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:05,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:05,302 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2022-11-18 20:35:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:35:05,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 20:35:05,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:05,305 INFO L225 Difference]: With dead ends: 57 [2022-11-18 20:35:05,306 INFO L226 Difference]: Without dead ends: 57 [2022-11-18 20:35:05,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:35:05,307 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 33 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:05,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 102 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:35:05,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-18 20:35:05,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 31. [2022-11-18 20:35:05,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 30 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:05,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2022-11-18 20:35:05,326 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 6 [2022-11-18 20:35:05,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:05,327 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2022-11-18 20:35:05,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:05,328 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2022-11-18 20:35:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:35:05,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:05,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:35:05,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:05,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:05,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:05,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:05,542 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-11-18 20:35:05,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:05,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217624878] [2022-11-18 20:35:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:05,543 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:05,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:05,544 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:05,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 20:35:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:05,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:35:05,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:05,693 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 8 treesize of output 7 [2022-11-18 20:35:05,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:05,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:05,796 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:05,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217624878] [2022-11-18 20:35:05,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217624878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:05,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:05,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:05,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636155817] [2022-11-18 20:35:05,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:05,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:05,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:05,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:05,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:05,800 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:05,849 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-11-18 20:35:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:05,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 20:35:05,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:05,860 INFO L225 Difference]: With dead ends: 33 [2022-11-18 20:35:05,860 INFO L226 Difference]: Without dead ends: 33 [2022-11-18 20:35:05,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:35:05,861 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:05,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 67 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2022-11-18 20:35:05,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-18 20:35:05,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2022-11-18 20:35:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.5) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:05,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-11-18 20:35:05,866 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2022-11-18 20:35:05,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:05,866 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-11-18 20:35:05,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:05,867 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-11-18 20:35:05,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 20:35:05,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:05,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:05,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:06,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:06,083 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:06,086 INFO L85 PathProgramCache]: Analyzing trace with hash 176742583, now seen corresponding path program 1 times [2022-11-18 20:35:06,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:06,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662581070] [2022-11-18 20:35:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:06,087 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:06,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:06,088 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:06,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 20:35:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:06,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:35:06,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:06,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 20:35:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:06,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:06,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:06,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662581070] [2022-11-18 20:35:06,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662581070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:06,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:06,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:35:06,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431838918] [2022-11-18 20:35:06,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:06,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:06,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:06,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:06,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:06,184 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:06,282 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2022-11-18 20:35:06,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:35:06,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 20:35:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:06,284 INFO L225 Difference]: With dead ends: 29 [2022-11-18 20:35:06,284 INFO L226 Difference]: Without dead ends: 29 [2022-11-18 20:35:06,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:35:06,286 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 33 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:06,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 26 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:35:06,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-18 20:35:06,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-18 20:35:06,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.375) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:06,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2022-11-18 20:35:06,290 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 8 [2022-11-18 20:35:06,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:06,290 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2022-11-18 20:35:06,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:06,291 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2022-11-18 20:35:06,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 20:35:06,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:06,291 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:06,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:06,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:06,502 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:06,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:06,502 INFO L85 PathProgramCache]: Analyzing trace with hash 176742584, now seen corresponding path program 1 times [2022-11-18 20:35:06,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:06,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427831617] [2022-11-18 20:35:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:06,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:06,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:06,504 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:06,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 20:35:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:06,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:35:06,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:06,607 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 8 treesize of output 7 [2022-11-18 20:35:06,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:06,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:06,791 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:06,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427831617] [2022-11-18 20:35:06,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427831617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:06,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:06,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:35:06,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018760734] [2022-11-18 20:35:06,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:06,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:35:06,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:06,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:35:06,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:35:06,795 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:06,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:06,828 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2022-11-18 20:35:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:35:06,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 20:35:06,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:06,829 INFO L225 Difference]: With dead ends: 32 [2022-11-18 20:35:06,829 INFO L226 Difference]: Without dead ends: 32 [2022-11-18 20:35:06,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:06,831 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 23 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:06,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 23 Unchecked, 0.0s Time] [2022-11-18 20:35:06,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-18 20:35:06,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-11-18 20:35:06,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 31 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-18 20:35:06,835 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 8 [2022-11-18 20:35:06,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:06,835 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-18 20:35:06,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:06,836 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-18 20:35:06,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 20:35:06,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:06,836 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:06,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-18 20:35:07,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:07,048 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:07,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:07,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1091210163, now seen corresponding path program 1 times [2022-11-18 20:35:07,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:07,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1977649669] [2022-11-18 20:35:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:07,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:07,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:07,050 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:07,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 20:35:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:35:07,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:07,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:07,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:07,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1977649669] [2022-11-18 20:35:07,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1977649669] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:07,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:07,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 20:35:07,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92518920] [2022-11-18 20:35:07,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:07,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:35:07,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:07,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:35:07,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:35:07,276 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:07,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:07,391 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-11-18 20:35:07,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:35:07,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 20:35:07,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:07,398 INFO L225 Difference]: With dead ends: 52 [2022-11-18 20:35:07,398 INFO L226 Difference]: Without dead ends: 52 [2022-11-18 20:35:07,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:35:07,399 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 81 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:07,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 113 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:35:07,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-18 20:35:07,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 36. [2022-11-18 20:35:07,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 35 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:07,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2022-11-18 20:35:07,411 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 10 [2022-11-18 20:35:07,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:07,411 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2022-11-18 20:35:07,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:07,412 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2022-11-18 20:35:07,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 20:35:07,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:07,412 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:07,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:07,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:07,613 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:07,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:07,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1900556789, now seen corresponding path program 1 times [2022-11-18 20:35:07,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:07,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734871993] [2022-11-18 20:35:07,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:07,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:07,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:07,616 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:07,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 20:35:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:07,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:35:07,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:07,701 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 8 treesize of output 7 [2022-11-18 20:35:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:07,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:08,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:08,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:08,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734871993] [2022-11-18 20:35:08,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734871993] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:08,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:08,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-18 20:35:08,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159236921] [2022-11-18 20:35:08,351 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:08,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:35:08,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:08,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:35:08,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:35:08,352 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:08,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:08,823 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2022-11-18 20:35:08,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:35:08,826 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-18 20:35:08,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:08,826 INFO L225 Difference]: With dead ends: 57 [2022-11-18 20:35:08,826 INFO L226 Difference]: Without dead ends: 57 [2022-11-18 20:35:08,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:35:08,827 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 110 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:08,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 65 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 5 Unchecked, 0.4s Time] [2022-11-18 20:35:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-18 20:35:08,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 41. [2022-11-18 20:35:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-11-18 20:35:08,832 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 10 [2022-11-18 20:35:08,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:08,832 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-11-18 20:35:08,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-11-18 20:35:08,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 20:35:08,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:08,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:08,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:09,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:09,047 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:09,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash -680998147, now seen corresponding path program 1 times [2022-11-18 20:35:09,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:09,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117786117] [2022-11-18 20:35:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:09,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:09,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:09,050 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:09,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 20:35:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:09,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:35:09,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:09,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 20:35:09,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:09,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:09,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:09,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117786117] [2022-11-18 20:35:09,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117786117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:09,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:09,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:35:09,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73096926] [2022-11-18 20:35:09,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:09,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:35:09,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:09,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:35:09,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:35:09,207 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:09,417 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2022-11-18 20:35:09,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:09,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 20:35:09,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:09,418 INFO L225 Difference]: With dead ends: 69 [2022-11-18 20:35:09,419 INFO L226 Difference]: Without dead ends: 69 [2022-11-18 20:35:09,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:35:09,420 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:09,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 75 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:35:09,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-18 20:35:09,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 49. [2022-11-18 20:35:09,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 48 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2022-11-18 20:35:09,425 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2022-11-18 20:35:09,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:09,426 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2022-11-18 20:35:09,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2022-11-18 20:35:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 20:35:09,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:09,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:09,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:09,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:09,639 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:09,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:09,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1074025157, now seen corresponding path program 1 times [2022-11-18 20:35:09,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:09,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203378965] [2022-11-18 20:35:09,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:09,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:09,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:09,641 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:09,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 20:35:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:09,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 20:35:09,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:09,741 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 8 treesize of output 7 [2022-11-18 20:35:10,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:10,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:10,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:10,496 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:10,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203378965] [2022-11-18 20:35:10,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203378965] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:10,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:35:10,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 20:35:10,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376597908] [2022-11-18 20:35:10,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:10,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:35:10,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:10,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:35:10,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:35:10,498 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:10,747 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2022-11-18 20:35:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:10,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-18 20:35:10,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:10,749 INFO L225 Difference]: With dead ends: 53 [2022-11-18 20:35:10,749 INFO L226 Difference]: Without dead ends: 53 [2022-11-18 20:35:10,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:35:10,750 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 60 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:10,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 30 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:35:10,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-18 20:35:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2022-11-18 20:35:10,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 38 states have (on average 1.236842105263158) internal successors, (47), 40 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2022-11-18 20:35:10,754 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 12 [2022-11-18 20:35:10,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:10,755 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2022-11-18 20:35:10,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:10,755 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2022-11-18 20:35:10,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 20:35:10,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:10,756 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:10,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:10,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:10,956 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:10,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:10,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1604227594, now seen corresponding path program 1 times [2022-11-18 20:35:10,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:10,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967369655] [2022-11-18 20:35:10,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:10,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:10,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:10,958 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:10,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 20:35:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:11,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:35:11,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:11,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:11,040 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:11,041 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:11,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967369655] [2022-11-18 20:35:11,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967369655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:11,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:11,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:35:11,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271046212] [2022-11-18 20:35:11,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:11,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:11,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:11,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:11,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:11,042 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:11,135 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2022-11-18 20:35:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:35:11,137 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 20:35:11,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:11,137 INFO L225 Difference]: With dead ends: 64 [2022-11-18 20:35:11,137 INFO L226 Difference]: Without dead ends: 64 [2022-11-18 20:35:11,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:35:11,139 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 32 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:11,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 62 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:35:11,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-18 20:35:11,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2022-11-18 20:35:11,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.225) internal successors, (49), 42 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2022-11-18 20:35:11,148 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 14 [2022-11-18 20:35:11,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:11,148 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2022-11-18 20:35:11,148 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:11,149 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2022-11-18 20:35:11,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 20:35:11,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:11,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:11,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:11,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:11,350 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:11,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1346062156, now seen corresponding path program 1 times [2022-11-18 20:35:11,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:11,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1461671392] [2022-11-18 20:35:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:11,351 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:11,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:11,352 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:11,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 20:35:11,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:11,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:35:11,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:11,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:11,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:11,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1461671392] [2022-11-18 20:35:11,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1461671392] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:11,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:11,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2022-11-18 20:35:11,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599607060] [2022-11-18 20:35:11,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:11,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:35:11,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:11,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:35:11,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:35:11,673 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:12,011 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2022-11-18 20:35:12,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:35:12,012 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 20:35:12,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:12,013 INFO L225 Difference]: With dead ends: 66 [2022-11-18 20:35:12,013 INFO L226 Difference]: Without dead ends: 66 [2022-11-18 20:35:12,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:35:12,014 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 178 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:12,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 72 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:35:12,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-18 20:35:12,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 41. [2022-11-18 20:35:12,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 38 states have (on average 1.2105263157894737) internal successors, (46), 40 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2022-11-18 20:35:12,018 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 14 [2022-11-18 20:35:12,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:12,018 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2022-11-18 20:35:12,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,018 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2022-11-18 20:35:12,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:35:12,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:12,019 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:12,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:12,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:12,219 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:12,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:12,220 INFO L85 PathProgramCache]: Analyzing trace with hash 265956368, now seen corresponding path program 1 times [2022-11-18 20:35:12,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:12,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279526925] [2022-11-18 20:35:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:12,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:12,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:12,222 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:12,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 20:35:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:12,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:35:12,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:12,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:12,448 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:12,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:12,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279526925] [2022-11-18 20:35:12,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279526925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:12,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:12,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-18 20:35:12,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104923585] [2022-11-18 20:35:12,449 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:12,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:35:12,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:12,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:35:12,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:35:12,450 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:12,599 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2022-11-18 20:35:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:35:12,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 20:35:12,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:12,601 INFO L225 Difference]: With dead ends: 55 [2022-11-18 20:35:12,601 INFO L226 Difference]: Without dead ends: 55 [2022-11-18 20:35:12,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:35:12,602 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 40 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:12,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 92 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:35:12,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-18 20:35:12,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2022-11-18 20:35:12,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1875) internal successors, (57), 50 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-11-18 20:35:12,606 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 16 [2022-11-18 20:35:12,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:12,606 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-11-18 20:35:12,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:12,606 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-11-18 20:35:12,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 20:35:12,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:12,607 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:12,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:12,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:12,817 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:12,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:12,817 INFO L85 PathProgramCache]: Analyzing trace with hash -745160882, now seen corresponding path program 1 times [2022-11-18 20:35:12,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:12,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808638064] [2022-11-18 20:35:12,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:12,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:12,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:12,818 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:12,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 20:35:12,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:12,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 20:35:12,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:12,912 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 8 treesize of output 7 [2022-11-18 20:35:13,203 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:13,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:13,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:13,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:13,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808638064] [2022-11-18 20:35:13,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808638064] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:13,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:13,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-11-18 20:35:13,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770791969] [2022-11-18 20:35:13,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:13,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:35:13,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:13,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:35:13,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:35:13,886 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:14,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:14,727 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2022-11-18 20:35:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:35:14,729 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 20:35:14,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:14,730 INFO L225 Difference]: With dead ends: 76 [2022-11-18 20:35:14,730 INFO L226 Difference]: Without dead ends: 76 [2022-11-18 20:35:14,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:35:14,731 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 124 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:14,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 88 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 86 Invalid, 0 Unknown, 7 Unchecked, 0.4s Time] [2022-11-18 20:35:14,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-18 20:35:14,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2022-11-18 20:35:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 64 states have (on average 1.203125) internal successors, (77), 66 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2022-11-18 20:35:14,735 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 16 [2022-11-18 20:35:14,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:14,736 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2022-11-18 20:35:14,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:14,743 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2022-11-18 20:35:14,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:35:14,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:14,746 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:14,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:14,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:14,956 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:14,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:14,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2114005431, now seen corresponding path program 1 times [2022-11-18 20:35:14,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:14,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1485238144] [2022-11-18 20:35:14,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:14,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:14,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:14,958 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:14,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 20:35:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:15,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:35:15,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:15,201 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc8#1.base_11| (_ BitVec 32))) (and (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc8#1.base_11| (_ bv0 1)) |c_#valid|) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc8#1.base_11|) (_ bv0 1)))) is different from true [2022-11-18 20:35:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:35:15,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:15,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:15,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1485238144] [2022-11-18 20:35:15,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1485238144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:15,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:15,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:35:15,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698832688] [2022-11-18 20:35:15,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:15,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:35:15,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:35:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-18 20:35:15,204 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:15,230 INFO L93 Difference]: Finished difference Result 92 states and 108 transitions. [2022-11-18 20:35:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:15,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:35:15,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:15,233 INFO L225 Difference]: With dead ends: 92 [2022-11-18 20:35:15,233 INFO L226 Difference]: Without dead ends: 87 [2022-11-18 20:35:15,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-18 20:35:15,234 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:15,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 47 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2022-11-18 20:35:15,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-18 20:35:15,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2022-11-18 20:35:15,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 81 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2022-11-18 20:35:15,239 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 96 transitions. Word has length 18 [2022-11-18 20:35:15,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:15,240 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 96 transitions. [2022-11-18 20:35:15,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:15,240 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 96 transitions. [2022-11-18 20:35:15,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:35:15,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:15,241 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2022-11-18 20:35:15,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:15,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:15,466 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:15,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:15,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1817992175, now seen corresponding path program 2 times [2022-11-18 20:35:15,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:15,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816106652] [2022-11-18 20:35:15,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:35:15,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:15,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:15,470 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:15,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-18 20:35:15,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:35:15,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:15,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 20:35:15,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:15,570 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 8 treesize of output 7 [2022-11-18 20:35:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:15,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:16,880 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:16,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:16,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816106652] [2022-11-18 20:35:16,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816106652] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:16,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:16,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 20:35:16,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342552974] [2022-11-18 20:35:16,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:16,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:35:16,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:35:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:35:16,883 INFO L87 Difference]: Start difference. First operand 82 states and 96 transitions. Second operand has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:18,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:18,886 INFO L93 Difference]: Finished difference Result 323 states and 386 transitions. [2022-11-18 20:35:18,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:35:18,887 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 20:35:18,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:18,889 INFO L225 Difference]: With dead ends: 323 [2022-11-18 20:35:18,889 INFO L226 Difference]: Without dead ends: 323 [2022-11-18 20:35:18,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=144, Invalid=318, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:35:18,890 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 460 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:18,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 252 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 194 Invalid, 0 Unknown, 36 Unchecked, 0.9s Time] [2022-11-18 20:35:18,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-18 20:35:18,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 98. [2022-11-18 20:35:18,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 95 states have (on average 1.2210526315789474) internal successors, (116), 97 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:18,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2022-11-18 20:35:18,907 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 18 [2022-11-18 20:35:18,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:18,908 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2022-11-18 20:35:18,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 14 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:18,908 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2022-11-18 20:35:18,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:35:18,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:18,909 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:18,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:19,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:19,119 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:19,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:19,119 INFO L85 PathProgramCache]: Analyzing trace with hash 997947932, now seen corresponding path program 1 times [2022-11-18 20:35:19,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:19,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027619133] [2022-11-18 20:35:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:19,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:19,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:19,121 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:19,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-18 20:35:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:19,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:35:19,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:19,371 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_#t~malloc8#1.base_13| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc8#1.base_13| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_#t~malloc8#1.base_13|)))) is different from true [2022-11-18 20:35:19,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:35:19,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:19,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:19,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027619133] [2022-11-18 20:35:19,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027619133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:19,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:19,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:35:19,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433993848] [2022-11-18 20:35:19,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:19,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:35:19,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:19,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:35:19,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-18 20:35:19,374 INFO L87 Difference]: Start difference. First operand 98 states and 116 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:19,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:19,381 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2022-11-18 20:35:19,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:35:19,382 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:35:19,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:19,382 INFO L225 Difference]: With dead ends: 97 [2022-11-18 20:35:19,382 INFO L226 Difference]: Without dead ends: 76 [2022-11-18 20:35:19,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2022-11-18 20:35:19,383 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:19,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 36 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 27 Unchecked, 0.0s Time] [2022-11-18 20:35:19,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-18 20:35:19,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2022-11-18 20:35:19,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 62 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2022-11-18 20:35:19,387 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 24 [2022-11-18 20:35:19,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:19,387 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2022-11-18 20:35:19,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:19,388 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2022-11-18 20:35:19,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:35:19,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:19,389 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:19,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:19,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:19,606 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:19,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:19,607 INFO L85 PathProgramCache]: Analyzing trace with hash 861855476, now seen corresponding path program 2 times [2022-11-18 20:35:19,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:19,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424136733] [2022-11-18 20:35:19,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:35:19,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:19,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:19,609 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:19,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-18 20:35:19,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:35:19,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:19,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:35:19,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:19,730 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 8 treesize of output 7 [2022-11-18 20:35:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:35:20,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:21,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:21,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424136733] [2022-11-18 20:35:21,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424136733] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:21,677 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:21,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2022-11-18 20:35:21,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188457037] [2022-11-18 20:35:21,677 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:21,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 20:35:21,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:21,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 20:35:21,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:35:21,679 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:22,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:22,322 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2022-11-18 20:35:22,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:35:22,323 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:35:22,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:22,324 INFO L225 Difference]: With dead ends: 74 [2022-11-18 20:35:22,324 INFO L226 Difference]: Without dead ends: 71 [2022-11-18 20:35:22,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:35:22,325 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 32 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:22,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 91 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 16 Unchecked, 0.4s Time] [2022-11-18 20:35:22,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-18 20:35:22,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2022-11-18 20:35:22,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 66 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2022-11-18 20:35:22,329 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 24 [2022-11-18 20:35:22,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:22,329 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2022-11-18 20:35:22,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:22,330 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2022-11-18 20:35:22,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:35:22,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:22,331 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:22,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:22,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:22,544 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:22,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:22,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1755727223, now seen corresponding path program 3 times [2022-11-18 20:35:22,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:22,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500646996] [2022-11-18 20:35:22,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:35:22,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:22,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:22,546 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:22,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-18 20:35:22,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-18 20:35:22,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:22,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 20:35:22,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:22,725 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 8 treesize of output 7 [2022-11-18 20:35:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:23,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:25,625 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:25,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500646996] [2022-11-18 20:35:25,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500646996] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:25,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:25,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2022-11-18 20:35:25,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922695888] [2022-11-18 20:35:25,626 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:25,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 20:35:25,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:25,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 20:35:25,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:35:25,627 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:31,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:31,744 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2022-11-18 20:35:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 20:35:31,745 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:35:31,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:31,746 INFO L225 Difference]: With dead ends: 132 [2022-11-18 20:35:31,746 INFO L226 Difference]: Without dead ends: 114 [2022-11-18 20:35:31,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=446, Invalid=1360, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 20:35:31,748 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 425 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:31,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 159 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:35:31,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-18 20:35:31,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 75. [2022-11-18 20:35:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.1643835616438356) internal successors, (85), 74 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 85 transitions. [2022-11-18 20:35:31,752 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 85 transitions. Word has length 28 [2022-11-18 20:35:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:31,752 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 85 transitions. [2022-11-18 20:35:31,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 22 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 85 transitions. [2022-11-18 20:35:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 20:35:31,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:31,754 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2022-11-18 20:35:31,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-18 20:35:31,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:31,966 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:31,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:31,967 INFO L85 PathProgramCache]: Analyzing trace with hash -563143139, now seen corresponding path program 3 times [2022-11-18 20:35:31,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:31,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823776980] [2022-11-18 20:35:31,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:35:31,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:31,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:31,970 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:31,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-18 20:35:32,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-18 20:35:32,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:32,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:35:32,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:32,188 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 8 treesize of output 7 [2022-11-18 20:35:33,135 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:33,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:36,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:35:36,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823776980] [2022-11-18 20:35:36,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823776980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:36,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:35:36,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-18 20:35:36,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926961375] [2022-11-18 20:35:36,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:36,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 20:35:36,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:35:36,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 20:35:36,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:35:36,276 INFO L87 Difference]: Start difference. First operand 75 states and 85 transitions. Second operand has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:40,799 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 [] [2022-11-18 20:35:46,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:35:57,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:57,844 INFO L93 Difference]: Finished difference Result 537 states and 603 transitions. [2022-11-18 20:35:57,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:35:57,846 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-18 20:35:57,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:57,848 INFO L225 Difference]: With dead ends: 537 [2022-11-18 20:35:57,848 INFO L226 Difference]: Without dead ends: 537 [2022-11-18 20:35:57,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=739, Invalid=1613, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 20:35:57,850 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 821 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:57,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 467 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 535 Invalid, 1 Unknown, 66 Unchecked, 6.5s Time] [2022-11-18 20:35:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-11-18 20:35:57,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 107. [2022-11-18 20:35:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 106 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:57,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 125 transitions. [2022-11-18 20:35:57,857 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 125 transitions. Word has length 34 [2022-11-18 20:35:57,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:57,858 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 125 transitions. [2022-11-18 20:35:57,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.869565217391304) internal successors, (66), 24 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:57,858 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 125 transitions. [2022-11-18 20:35:57,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 20:35:57,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:57,860 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:57,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:58,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:58,074 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:35:58,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:58,075 INFO L85 PathProgramCache]: Analyzing trace with hash 195132954, now seen corresponding path program 1 times [2022-11-18 20:35:58,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:35:58,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701237941] [2022-11-18 20:35:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:58,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:35:58,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:35:58,077 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:35:58,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-18 20:35:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:58,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:35:58,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:58,246 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 8 treesize of output 7 [2022-11-18 20:35:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:35:58,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:36:01,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:36:01,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701237941] [2022-11-18 20:36:01,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701237941] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:01,515 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:36:01,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2022-11-18 20:36:01,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269887265] [2022-11-18 20:36:01,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:01,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:36:01,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:36:01,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:36:01,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:36:01,516 INFO L87 Difference]: Start difference. First operand 107 states and 125 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:02,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:02,808 INFO L93 Difference]: Finished difference Result 142 states and 164 transitions. [2022-11-18 20:36:02,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:36:02,810 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-18 20:36:02,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:02,811 INFO L225 Difference]: With dead ends: 142 [2022-11-18 20:36:02,811 INFO L226 Difference]: Without dead ends: 129 [2022-11-18 20:36:02,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-11-18 20:36:02,812 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 70 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:02,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 118 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 18 Unchecked, 0.6s Time] [2022-11-18 20:36:02,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-18 20:36:02,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 123. [2022-11-18 20:36:02,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 122 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:02,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 144 transitions. [2022-11-18 20:36:02,817 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 144 transitions. Word has length 34 [2022-11-18 20:36:02,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:02,817 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 144 transitions. [2022-11-18 20:36:02,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:02,817 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 144 transitions. [2022-11-18 20:36:02,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 20:36:02,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:02,819 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:02,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:03,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:36:03,019 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:36:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:03,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1584580368, now seen corresponding path program 4 times [2022-11-18 20:36:03,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:36:03,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895481743] [2022-11-18 20:36:03,020 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:36:03,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:36:03,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:36:03,021 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:36:03,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-18 20:36:03,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:36:03,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:36:03,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:36:03,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:03,157 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 8 treesize of output 7 [2022-11-18 20:36:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:36:03,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 20:36:06,507 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:36:06,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895481743] [2022-11-18 20:36:06,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895481743] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:06,507 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:36:06,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-11-18 20:36:06,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538215445] [2022-11-18 20:36:06,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:06,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 20:36:06,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:36:06,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 20:36:06,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:36:06,509 INFO L87 Difference]: Start difference. First operand 123 states and 144 transitions. Second operand has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:12,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:12,903 INFO L93 Difference]: Finished difference Result 174 states and 201 transitions. [2022-11-18 20:36:12,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 20:36:12,905 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-18 20:36:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:12,906 INFO L225 Difference]: With dead ends: 174 [2022-11-18 20:36:12,906 INFO L226 Difference]: Without dead ends: 174 [2022-11-18 20:36:12,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 20:36:12,907 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 398 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:12,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 174 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 214 Invalid, 0 Unknown, 40 Unchecked, 2.7s Time] [2022-11-18 20:36:12,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-18 20:36:12,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 143. [2022-11-18 20:36:12,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 141 states have (on average 1.1702127659574468) internal successors, (165), 142 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:12,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 165 transitions. [2022-11-18 20:36:12,912 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 165 transitions. Word has length 40 [2022-11-18 20:36:12,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:12,913 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 165 transitions. [2022-11-18 20:36:12,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.8421052631578947) internal successors, (54), 20 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:12,913 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 165 transitions. [2022-11-18 20:36:12,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 20:36:12,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:12,915 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:12,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:13,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:36:13,122 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:36:13,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:13,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1667679380, now seen corresponding path program 5 times [2022-11-18 20:36:13,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:36:13,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112056205] [2022-11-18 20:36:13,123 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:36:13,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:36:13,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:36:13,127 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:36:13,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-18 20:36:13,361 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-18 20:36:13,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:36:13,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 20:36:13,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:13,388 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 8 treesize of output 7 [2022-11-18 20:36:14,750 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 60 proven. 113 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:36:14,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:21,035 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:21,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:36:21,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112056205] [2022-11-18 20:36:21,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112056205] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:21,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:36:21,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2022-11-18 20:36:21,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388415571] [2022-11-18 20:36:21,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:21,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 20:36:21,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:36:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 20:36:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=952, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:36:21,038 INFO L87 Difference]: Start difference. First operand 143 states and 165 transitions. Second operand has 34 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 34 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:26,643 INFO L93 Difference]: Finished difference Result 218 states and 251 transitions. [2022-11-18 20:36:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:36:26,646 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 34 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-11-18 20:36:26,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:26,648 INFO L225 Difference]: With dead ends: 218 [2022-11-18 20:36:26,648 INFO L226 Difference]: Without dead ends: 215 [2022-11-18 20:36:26,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=327, Invalid=1565, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 20:36:26,650 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 126 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:26,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 397 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 409 Invalid, 0 Unknown, 28 Unchecked, 2.3s Time] [2022-11-18 20:36:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-18 20:36:26,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 191. [2022-11-18 20:36:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 189 states have (on average 1.1851851851851851) internal successors, (224), 190 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 224 transitions. [2022-11-18 20:36:26,664 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 224 transitions. Word has length 56 [2022-11-18 20:36:26,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:26,665 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 224 transitions. [2022-11-18 20:36:26,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.1470588235294117) internal successors, (107), 34 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:26,665 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 224 transitions. [2022-11-18 20:36:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 20:36:26,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:26,666 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:26,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:26,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:36:26,881 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:36:26,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:26,881 INFO L85 PathProgramCache]: Analyzing trace with hash 351369087, now seen corresponding path program 2 times [2022-11-18 20:36:26,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:36:26,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096173592] [2022-11-18 20:36:26,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:36:26,882 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:36:26,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:36:26,883 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:36:26,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-18 20:36:27,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:36:27,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:36:27,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 20:36:27,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:27,043 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 8 treesize of output 7 [2022-11-18 20:36:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 64 proven. 126 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:36:28,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 194 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:36:34,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:36:34,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096173592] [2022-11-18 20:36:34,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096173592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:34,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:36:34,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 33 [2022-11-18 20:36:34,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448018668] [2022-11-18 20:36:34,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:34,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 20:36:34,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:36:34,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 20:36:34,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 20:36:34,682 INFO L87 Difference]: Start difference. First operand 191 states and 224 transitions. Second operand has 33 states, 33 states have (on average 3.5454545454545454) internal successors, (117), 33 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:42,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:42,451 INFO L93 Difference]: Finished difference Result 413 states and 479 transitions. [2022-11-18 20:36:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:36:42,453 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.5454545454545454) internal successors, (117), 33 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-18 20:36:42,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:42,455 INFO L225 Difference]: With dead ends: 413 [2022-11-18 20:36:42,455 INFO L226 Difference]: Without dead ends: 397 [2022-11-18 20:36:42,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=258, Invalid=1548, Unknown=0, NotChecked=0, Total=1806 [2022-11-18 20:36:42,457 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 179 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:42,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 541 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 515 Invalid, 0 Unknown, 75 Unchecked, 4.4s Time] [2022-11-18 20:36:42,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2022-11-18 20:36:42,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 183. [2022-11-18 20:36:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 181 states have (on average 1.1767955801104972) internal successors, (213), 182 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 213 transitions. [2022-11-18 20:36:42,464 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 213 transitions. Word has length 62 [2022-11-18 20:36:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:42,464 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 213 transitions. [2022-11-18 20:36:42,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.5454545454545454) internal successors, (117), 33 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:42,465 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 213 transitions. [2022-11-18 20:36:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-18 20:36:42,466 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:42,466 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:42,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-18 20:36:42,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:36:42,680 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:36:42,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:42,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1669066815, now seen corresponding path program 3 times [2022-11-18 20:36:42,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:36:42,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597065251] [2022-11-18 20:36:42,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:36:42,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:36:42,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:36:42,682 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:36:42,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-18 20:36:42,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-18 20:36:42,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:36:42,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:36:42,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:42,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-18 20:36:45,117 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 33 treesize of output 25 [2022-11-18 20:36:45,132 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 120 proven. 15 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-18 20:36:45,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:51,388 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 48 proven. 87 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-18 20:36:51,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:36:51,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597065251] [2022-11-18 20:36:51,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1597065251] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:51,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:36:51,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-18 20:36:51,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336376948] [2022-11-18 20:36:51,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:51,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 20:36:51,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:36:51,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 20:36:51,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:36:51,392 INFO L87 Difference]: Start difference. First operand 183 states and 213 transitions. Second operand has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:51,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:51,854 INFO L93 Difference]: Finished difference Result 339 states and 389 transitions. [2022-11-18 20:36:51,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:36:51,855 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-18 20:36:51,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:51,857 INFO L225 Difference]: With dead ends: 339 [2022-11-18 20:36:51,857 INFO L226 Difference]: Without dead ends: 321 [2022-11-18 20:36:51,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=148, Invalid=664, Unknown=0, NotChecked=0, Total=812 [2022-11-18 20:36:51,858 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 42 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:51,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 159 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 99 Unchecked, 0.4s Time] [2022-11-18 20:36:51,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-18 20:36:51,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 306. [2022-11-18 20:36:51,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 304 states have (on average 1.1710526315789473) internal successors, (356), 305 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:51,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 356 transitions. [2022-11-18 20:36:51,866 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 356 transitions. Word has length 62 [2022-11-18 20:36:51,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:51,866 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 356 transitions. [2022-11-18 20:36:51,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.9285714285714284) internal successors, (82), 28 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 356 transitions. [2022-11-18 20:36:51,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 20:36:51,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:51,868 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:51,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-18 20:36:52,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:36:52,074 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:36:52,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:52,075 INFO L85 PathProgramCache]: Analyzing trace with hash 945581570, now seen corresponding path program 6 times [2022-11-18 20:36:52,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:36:52,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780753679] [2022-11-18 20:36:52,075 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:36:52,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:36:52,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:36:52,076 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:36:52,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-18 20:36:52,415 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-11-18 20:36:52,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:36:52,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:36:52,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:52,444 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 8 treesize of output 7 [2022-11-18 20:36:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 110 proven. 78 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:36:53,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:56,130 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 110 proven. 78 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-18 20:36:56,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:36:56,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780753679] [2022-11-18 20:36:56,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780753679] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:56,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:36:56,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2022-11-18 20:36:56,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579038215] [2022-11-18 20:36:56,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:56,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:36:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:36:56,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:36:56,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:36:56,133 INFO L87 Difference]: Start difference. First operand 306 states and 356 transitions. Second operand has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 30 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:03,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:03,194 INFO L93 Difference]: Finished difference Result 434 states and 496 transitions. [2022-11-18 20:37:03,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:37:03,196 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 30 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-18 20:37:03,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:03,197 INFO L225 Difference]: With dead ends: 434 [2022-11-18 20:37:03,197 INFO L226 Difference]: Without dead ends: 291 [2022-11-18 20:37:03,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=377, Invalid=1693, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:37:03,199 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 457 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:03,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 668 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 734 Invalid, 0 Unknown, 178 Unchecked, 5.0s Time] [2022-11-18 20:37:03,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-18 20:37:03,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 191. [2022-11-18 20:37:03,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 189 states have (on average 1.1693121693121693) internal successors, (221), 190 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:03,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 221 transitions. [2022-11-18 20:37:03,206 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 221 transitions. Word has length 64 [2022-11-18 20:37:03,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:03,206 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 221 transitions. [2022-11-18 20:37:03,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.033333333333333) internal successors, (91), 30 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:03,207 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 221 transitions. [2022-11-18 20:37:03,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:37:03,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:03,208 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2022-11-18 20:37:03,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-18 20:37:03,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:37:03,424 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:37:03,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:03,425 INFO L85 PathProgramCache]: Analyzing trace with hash 58542645, now seen corresponding path program 4 times [2022-11-18 20:37:03,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:37:03,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619544513] [2022-11-18 20:37:03,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:37:03,425 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:37:03,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:37:03,426 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:37:03,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-18 20:37:03,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:37:03,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:37:03,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:37:03,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:03,631 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 8 treesize of output 7 [2022-11-18 20:37:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:06,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:37:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:17,810 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:37:17,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619544513] [2022-11-18 20:37:17,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619544513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:37:17,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:37:17,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2022-11-18 20:37:17,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446106140] [2022-11-18 20:37:17,811 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:37:17,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:37:17,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:37:17,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:37:17,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=1525, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:37:17,815 INFO L87 Difference]: Start difference. First operand 191 states and 221 transitions. Second operand has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:32,259 WARN L233 SmtUtils]: Spent 8.83s on a formula simplification that was a NOOP. DAG size: 171 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:37:34,399 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 [] [2022-11-18 20:37:36,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:39,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:48,525 WARN L233 SmtUtils]: Spent 8.62s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:38:02,225 WARN L233 SmtUtils]: Spent 12.47s on a formula simplification. DAG size of input: 163 DAG size of output: 163 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:38:04,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:06,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:08,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:10,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:17,077 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:38:30,856 WARN L233 SmtUtils]: Spent 12.36s on a formula simplification. DAG size of input: 152 DAG size of output: 152 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:38:33,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:35,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:37,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:39,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:53,569 WARN L233 SmtUtils]: Spent 7.65s on a formula simplification. DAG size of input: 141 DAG size of output: 141 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:38:55,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:57,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:59,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:01,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:13,019 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 131 DAG size of output: 131 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:39:15,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:17,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:18,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:20,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:30,942 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 120 DAG size of output: 120 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:39:33,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:35,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:37,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:47,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:49,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:51,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:00,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:02,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:10,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:12,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:19,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:21,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:27,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:29,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:35,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:40,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:44,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:44,047 INFO L93 Difference]: Finished difference Result 2203 states and 2486 transitions. [2022-11-18 20:40:44,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-11-18 20:40:44,050 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-18 20:40:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:44,055 INFO L225 Difference]: With dead ends: 2203 [2022-11-18 20:40:44,055 INFO L226 Difference]: Without dead ends: 2203 [2022-11-18 20:40:44,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2441 ImplicationChecksByTransitivity, 132.5s TimeCoverageRelationStatistics Valid=2223, Invalid=5259, Unknown=0, NotChecked=0, Total=7482 [2022-11-18 20:40:44,058 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 3285 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 142 mSolverCounterUnsat, 34 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 34 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 82.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:44,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3285 Valid, 1717 Invalid, 2607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2369 Invalid, 34 Unknown, 62 Unchecked, 82.4s Time] [2022-11-18 20:40:44,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2022-11-18 20:40:44,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 255. [2022-11-18 20:40:44,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 253 states have (on average 1.1897233201581028) internal successors, (301), 254 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:44,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 301 transitions. [2022-11-18 20:40:44,081 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 301 transitions. Word has length 66 [2022-11-18 20:40:44,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:44,081 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 301 transitions. [2022-11-18 20:40:44,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.888888888888889) internal successors, (130), 46 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:44,082 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 301 transitions. [2022-11-18 20:40:44,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:40:44,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:44,083 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:44,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:44,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:40:44,299 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:40:44,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:44,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1221987074, now seen corresponding path program 4 times [2022-11-18 20:40:44,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:40:44,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434001029] [2022-11-18 20:40:44,300 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:40:44,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:40:44,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:40:44,301 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:40:44,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-18 20:40:44,462 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:40:44,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:44,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:40:44,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:44,492 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 8 treesize of output 7 [2022-11-18 20:40:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 64 proven. 139 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:40:46,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:54,707 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:40:54,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:40:54,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434001029] [2022-11-18 20:40:54,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434001029] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:54,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:40:54,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 35 [2022-11-18 20:40:54,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520807882] [2022-11-18 20:40:54,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:54,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 20:40:54,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:40:54,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 20:40:54,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1022, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:40:54,710 INFO L87 Difference]: Start difference. First operand 255 states and 301 transitions. Second operand has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 35 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:00,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:00,904 INFO L93 Difference]: Finished difference Result 506 states and 591 transitions. [2022-11-18 20:41:00,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 20:41:00,906 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 35 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-18 20:41:00,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:00,908 INFO L225 Difference]: With dead ends: 506 [2022-11-18 20:41:00,908 INFO L226 Difference]: Without dead ends: 490 [2022-11-18 20:41:00,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=263, Invalid=1717, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 20:41:00,910 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 112 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:00,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 675 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 344 Invalid, 0 Unknown, 147 Unchecked, 2.4s Time] [2022-11-18 20:41:00,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-11-18 20:41:00,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 279. [2022-11-18 20:41:00,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 277 states have (on average 1.1949458483754514) internal successors, (331), 278 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:00,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 331 transitions. [2022-11-18 20:41:00,919 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 331 transitions. Word has length 66 [2022-11-18 20:41:00,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:00,920 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 331 transitions. [2022-11-18 20:41:00,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 35 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:00,920 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 331 transitions. [2022-11-18 20:41:00,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:41:00,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:00,921 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:00,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-18 20:41:01,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:41:01,145 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:41:01,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:01,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1450877822, now seen corresponding path program 5 times [2022-11-18 20:41:01,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:41:01,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430306108] [2022-11-18 20:41:01,146 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:41:01,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:41:01,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:41:01,148 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:41:01,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-18 20:41:01,674 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-18 20:41:01,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:41:01,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 20:41:01,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:41:01,724 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 8 treesize of output 7 [2022-11-18 20:41:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 64 proven. 139 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:41:04,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:41:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:41:14,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:41:14,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430306108] [2022-11-18 20:41:14,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [430306108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:41:14,453 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:41:14,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 37 [2022-11-18 20:41:14,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113652448] [2022-11-18 20:41:14,454 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:41:14,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:41:14,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:41:14,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:41:14,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=1144, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 20:41:14,455 INFO L87 Difference]: Start difference. First operand 279 states and 331 transitions. Second operand has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:21,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:21,417 INFO L93 Difference]: Finished difference Result 508 states and 600 transitions. [2022-11-18 20:41:21,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 20:41:21,420 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-18 20:41:21,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:21,421 INFO L225 Difference]: With dead ends: 508 [2022-11-18 20:41:21,421 INFO L226 Difference]: Without dead ends: 505 [2022-11-18 20:41:21,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=307, Invalid=2143, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 20:41:21,423 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 157 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 255 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:21,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 590 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 200 Invalid, 0 Unknown, 255 Unchecked, 1.2s Time] [2022-11-18 20:41:21,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-11-18 20:41:21,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 411. [2022-11-18 20:41:21,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 409 states have (on average 1.2053789731051345) internal successors, (493), 410 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 493 transitions. [2022-11-18 20:41:21,434 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 493 transitions. Word has length 66 [2022-11-18 20:41:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:21,434 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 493 transitions. [2022-11-18 20:41:21,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:21,435 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 493 transitions. [2022-11-18 20:41:21,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:41:21,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:21,436 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:21,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-18 20:41:21,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:41:21,654 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:41:21,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:21,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1218803010, now seen corresponding path program 6 times [2022-11-18 20:41:21,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:41:21,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220244172] [2022-11-18 20:41:21,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:41:21,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:41:21,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:41:21,656 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:41:21,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-18 20:41:22,099 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-11-18 20:41:22,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:41:22,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:41:22,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:41:22,141 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 8 treesize of output 7 [2022-11-18 20:41:23,735 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 96 proven. 87 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 20:41:23,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:41:26,456 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 96 proven. 87 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 20:41:26,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:41:26,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220244172] [2022-11-18 20:41:26,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220244172] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:41:26,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:41:26,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2022-11-18 20:41:26,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614832372] [2022-11-18 20:41:26,457 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:41:26,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:41:26,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:41:26,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:41:26,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:41:26,459 INFO L87 Difference]: Start difference. First operand 411 states and 493 transitions. Second operand has 30 states, 30 states have (on average 3.3666666666666667) internal successors, (101), 30 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:27,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:27,517 INFO L93 Difference]: Finished difference Result 529 states and 625 transitions. [2022-11-18 20:41:27,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:41:27,519 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.3666666666666667) internal successors, (101), 30 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-18 20:41:27,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:27,522 INFO L225 Difference]: With dead ends: 529 [2022-11-18 20:41:27,522 INFO L226 Difference]: Without dead ends: 514 [2022-11-18 20:41:27,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:41:27,523 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 66 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:27,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 292 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 257 Invalid, 0 Unknown, 48 Unchecked, 0.8s Time] [2022-11-18 20:41:27,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-11-18 20:41:27,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 473. [2022-11-18 20:41:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 471 states have (on average 1.1995753715498938) internal successors, (565), 472 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:27,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 565 transitions. [2022-11-18 20:41:27,534 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 565 transitions. Word has length 66 [2022-11-18 20:41:27,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:27,535 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 565 transitions. [2022-11-18 20:41:27,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.3666666666666667) internal successors, (101), 30 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:41:27,535 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 565 transitions. [2022-11-18 20:41:27,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:41:27,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:27,537 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:27,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-18 20:41:27,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:41:27,751 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:41:27,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:27,751 INFO L85 PathProgramCache]: Analyzing trace with hash -163200120, now seen corresponding path program 7 times [2022-11-18 20:41:27,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:41:27,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225105220] [2022-11-18 20:41:27,752 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:41:27,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:41:27,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:41:27,754 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:41:27,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-18 20:41:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:27,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 20:41:27,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:41:27,959 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 8 treesize of output 7 [2022-11-18 20:41:29,817 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 90 proven. 164 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:41:29,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:41:40,074 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:40,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:41:40,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225105220] [2022-11-18 20:41:40,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225105220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:41:40,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:41:40,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 40 [2022-11-18 20:41:40,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927329085] [2022-11-18 20:41:40,075 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:41:40,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 20:41:40,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:41:40,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 20:41:40,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 20:41:40,077 INFO L87 Difference]: Start difference. First operand 473 states and 565 transitions. Second operand has 40 states, 40 states have (on average 3.375) internal successors, (135), 40 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:18,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:42:18,935 INFO L93 Difference]: Finished difference Result 963 states and 1122 transitions. [2022-11-18 20:42:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-18 20:42:18,938 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.375) internal successors, (135), 40 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-18 20:42:18,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:42:18,943 INFO L225 Difference]: With dead ends: 963 [2022-11-18 20:42:18,943 INFO L226 Difference]: Without dead ends: 926 [2022-11-18 20:42:18,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1409 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=1064, Invalid=6768, Unknown=0, NotChecked=0, Total=7832 [2022-11-18 20:42:18,946 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1231 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 553 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:42:18,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1231 Valid, 1717 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2010 Invalid, 0 Unknown, 553 Unchecked, 14.6s Time] [2022-11-18 20:42:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-11-18 20:42:18,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 607. [2022-11-18 20:42:18,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 605 states have (on average 1.193388429752066) internal successors, (722), 606 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 722 transitions. [2022-11-18 20:42:18,971 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 722 transitions. Word has length 72 [2022-11-18 20:42:18,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:42:18,972 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 722 transitions. [2022-11-18 20:42:18,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.375) internal successors, (135), 40 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:18,972 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 722 transitions. [2022-11-18 20:42:18,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:42:18,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:42:18,974 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 9, 9, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:42:18,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-18 20:42:19,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:42:19,189 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:42:19,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:19,189 INFO L85 PathProgramCache]: Analyzing trace with hash 314270805, now seen corresponding path program 7 times [2022-11-18 20:42:19,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:42:19,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [233286464] [2022-11-18 20:42:19,190 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:42:19,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:42:19,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:42:19,192 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:42:19,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-18 20:42:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:19,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:42:19,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:42:19,373 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 8 treesize of output 7 [2022-11-18 20:42:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 68 proven. 158 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:42:21,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:42:28,538 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:42:28,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:42:28,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [233286464] [2022-11-18 20:42:28,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [233286464] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:42:28,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:42:28,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 35 [2022-11-18 20:42:28,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608417956] [2022-11-18 20:42:28,539 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:42:28,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 20:42:28,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:42:28,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 20:42:28,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1022, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:42:28,541 INFO L87 Difference]: Start difference. First operand 607 states and 722 transitions. Second operand has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:42:37,638 INFO L93 Difference]: Finished difference Result 887 states and 1037 transitions. [2022-11-18 20:42:37,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 20:42:37,640 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-18 20:42:37,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:42:37,642 INFO L225 Difference]: With dead ends: 887 [2022-11-18 20:42:37,642 INFO L226 Difference]: Without dead ends: 884 [2022-11-18 20:42:37,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=321, Invalid=2229, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 20:42:37,643 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 131 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:42:37,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 670 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 473 Invalid, 0 Unknown, 108 Unchecked, 3.0s Time] [2022-11-18 20:42:37,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-11-18 20:42:37,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 629. [2022-11-18 20:42:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 627 states have (on average 1.1913875598086126) internal successors, (747), 628 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 747 transitions. [2022-11-18 20:42:37,658 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 747 transitions. Word has length 72 [2022-11-18 20:42:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:42:37,659 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 747 transitions. [2022-11-18 20:42:37,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 747 transitions. [2022-11-18 20:42:37,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:42:37,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:42:37,661 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 9, 9, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:42:37,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-18 20:42:37,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:42:37,877 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:42:37,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:37,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1868026219, now seen corresponding path program 8 times [2022-11-18 20:42:37,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:42:37,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288919774] [2022-11-18 20:42:37,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:42:37,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:42:37,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:42:37,880 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:42:37,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-18 20:42:38,100 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:42:38,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:42:38,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-18 20:42:38,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:42:38,128 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 8 treesize of output 7 [2022-11-18 20:42:39,742 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 68 proven. 158 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:42:39,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:42:47,068 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:42:47,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:42:47,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288919774] [2022-11-18 20:42:47,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288919774] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:42:47,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:42:47,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 35 [2022-11-18 20:42:47,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670479091] [2022-11-18 20:42:47,069 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:42:47,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 20:42:47,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:42:47,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 20:42:47,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1022, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:42:47,071 INFO L87 Difference]: Start difference. First operand 629 states and 747 transitions. Second operand has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:02,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:02,900 INFO L93 Difference]: Finished difference Result 1087 states and 1266 transitions. [2022-11-18 20:43:02,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-18 20:43:02,903 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-18 20:43:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:02,904 INFO L225 Difference]: With dead ends: 1087 [2022-11-18 20:43:02,904 INFO L226 Difference]: Without dead ends: 1061 [2022-11-18 20:43:02,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=398, Invalid=3142, Unknown=0, NotChecked=0, Total=3540 [2022-11-18 20:43:02,906 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 215 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:02,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 720 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 750 Invalid, 0 Unknown, 125 Unchecked, 6.1s Time] [2022-11-18 20:43:02,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2022-11-18 20:43:02,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 508. [2022-11-18 20:43:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 506 states have (on average 1.1857707509881423) internal successors, (600), 507 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:02,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 600 transitions. [2022-11-18 20:43:02,924 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 600 transitions. Word has length 72 [2022-11-18 20:43:02,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:02,924 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 600 transitions. [2022-11-18 20:43:02,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.857142857142857) internal successors, (135), 35 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:02,924 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 600 transitions. [2022-11-18 20:43:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:43:02,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:02,926 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 9, 9, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:02,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-18 20:43:03,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:43:03,139 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:43:03,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:03,140 INFO L85 PathProgramCache]: Analyzing trace with hash -400222379, now seen corresponding path program 9 times [2022-11-18 20:43:03,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:43:03,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783119414] [2022-11-18 20:43:03,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:43:03,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:43:03,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:43:03,142 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:43:03,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-18 20:43:03,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-18 20:43:03,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:43:03,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 20:43:03,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:03,497 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 8 treesize of output 7 [2022-11-18 20:43:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 150 proven. 28 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 20:43:07,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:43:19,858 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 62 proven. 116 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-18 20:43:19,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:43:19,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783119414] [2022-11-18 20:43:19,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783119414] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:43:19,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:43:19,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 36 [2022-11-18 20:43:19,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875857965] [2022-11-18 20:43:19,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:43:19,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:43:19,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:43:19,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:43:19,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:43:19,860 INFO L87 Difference]: Start difference. First operand 508 states and 600 transitions. Second operand has 36 states, 36 states have (on average 2.7222222222222223) internal successors, (98), 36 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:20,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:20,389 INFO L93 Difference]: Finished difference Result 691 states and 808 transitions. [2022-11-18 20:43:20,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:43:20,390 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.7222222222222223) internal successors, (98), 36 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-18 20:43:20,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:20,396 INFO L225 Difference]: With dead ends: 691 [2022-11-18 20:43:20,396 INFO L226 Difference]: Without dead ends: 667 [2022-11-18 20:43:20,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=224, Invalid=1108, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 20:43:20,397 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 59 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:20,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 256 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 161 Unchecked, 0.4s Time] [2022-11-18 20:43:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-11-18 20:43:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 573. [2022-11-18 20:43:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 571 states have (on average 1.1908931698774081) internal successors, (680), 572 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:20,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 680 transitions. [2022-11-18 20:43:20,408 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 680 transitions. Word has length 72 [2022-11-18 20:43:20,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:20,408 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 680 transitions. [2022-11-18 20:43:20,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.7222222222222223) internal successors, (98), 36 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 680 transitions. [2022-11-18 20:43:20,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:43:20,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:20,410 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:20,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:20,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:43:20,625 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:43:20,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:20,625 INFO L85 PathProgramCache]: Analyzing trace with hash 831488328, now seen corresponding path program 10 times [2022-11-18 20:43:20,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:43:20,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617475879] [2022-11-18 20:43:20,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:43:20,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:43:20,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:43:20,627 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:43:20,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-18 20:43:20,817 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:43:20,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:43:20,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 20:43:20,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:20,848 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 8 treesize of output 7 [2022-11-18 20:43:22,653 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 64 proven. 177 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:43:22,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:43:31,495 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:43:31,495 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:43:31,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617475879] [2022-11-18 20:43:31,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617475879] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:43:31,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:43:31,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 39 [2022-11-18 20:43:31,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874881844] [2022-11-18 20:43:31,496 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:43:31,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-18 20:43:31,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:43:31,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-18 20:43:31,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1299, Unknown=0, NotChecked=0, Total=1482 [2022-11-18 20:43:31,498 INFO L87 Difference]: Start difference. First operand 573 states and 680 transitions. Second operand has 39 states, 39 states have (on average 3.6153846153846154) internal successors, (141), 39 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:59,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:59,418 INFO L93 Difference]: Finished difference Result 1062 states and 1240 transitions. [2022-11-18 20:43:59,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-18 20:43:59,420 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.6153846153846154) internal successors, (141), 39 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-18 20:43:59,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:59,421 INFO L225 Difference]: With dead ends: 1062 [2022-11-18 20:43:59,422 INFO L226 Difference]: Without dead ends: 1059 [2022-11-18 20:43:59,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1218 ImplicationChecksByTransitivity, 28.0s TimeCoverageRelationStatistics Valid=830, Invalid=5812, Unknown=0, NotChecked=0, Total=6642 [2022-11-18 20:43:59,423 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 371 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 409 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:59,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1111 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1136 Invalid, 0 Unknown, 409 Unchecked, 7.4s Time] [2022-11-18 20:43:59,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2022-11-18 20:43:59,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 767. [2022-11-18 20:43:59,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 765 states have (on average 1.2026143790849673) internal successors, (920), 766 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 920 transitions. [2022-11-18 20:43:59,437 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 920 transitions. Word has length 74 [2022-11-18 20:43:59,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:59,437 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 920 transitions. [2022-11-18 20:43:59,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.6153846153846154) internal successors, (141), 39 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 920 transitions. [2022-11-18 20:43:59,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 20:43:59,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:59,440 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:59,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-18 20:43:59,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:43:59,655 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:43:59,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:59,655 INFO L85 PathProgramCache]: Analyzing trace with hash -619577093, now seen corresponding path program 8 times [2022-11-18 20:43:59,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:43:59,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812118384] [2022-11-18 20:43:59,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:43:59,656 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:43:59,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:43:59,656 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:43:59,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-18 20:43:59,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:43:59,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:43:59,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 20:43:59,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:59,906 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 8 treesize of output 7 [2022-11-18 20:44:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 34 proven. 248 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:02,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:44:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 282 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:44:16,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:44:16,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812118384] [2022-11-18 20:44:16,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812118384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:44:16,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:44:16,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 46 [2022-11-18 20:44:16,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131656094] [2022-11-18 20:44:16,503 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:44:16,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:44:16,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:44:16,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:44:16,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1838, Unknown=0, NotChecked=0, Total=2070 [2022-11-18 20:44:16,505 INFO L87 Difference]: Start difference. First operand 767 states and 920 transitions. Second operand has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:01,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:45:11,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:45:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:45:17,977 INFO L93 Difference]: Finished difference Result 1277 states and 1491 transitions. [2022-11-18 20:45:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-18 20:45:17,991 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-18 20:45:17,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:45:17,995 INFO L225 Difference]: With dead ends: 1277 [2022-11-18 20:45:17,995 INFO L226 Difference]: Without dead ends: 1234 [2022-11-18 20:45:17,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2572 ImplicationChecksByTransitivity, 49.2s TimeCoverageRelationStatistics Valid=1483, Invalid=10727, Unknown=0, NotChecked=0, Total=12210 [2022-11-18 20:45:17,999 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 2589 mSDsluCounter, 3302 mSDsCounter, 0 mSdLazyCounter, 3755 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2589 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 5437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 3755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1634 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:45:18,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2589 Valid, 3450 Invalid, 5437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 3755 Invalid, 0 Unknown, 1634 Unchecked, 23.6s Time] [2022-11-18 20:45:18,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234 states. [2022-11-18 20:45:18,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1234 to 644. [2022-11-18 20:45:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 642 states have (on average 1.1962616822429906) internal successors, (768), 643 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 768 transitions. [2022-11-18 20:45:18,023 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 768 transitions. Word has length 76 [2022-11-18 20:45:18,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:45:18,023 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 768 transitions. [2022-11-18 20:45:18,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.260869565217391) internal successors, (150), 46 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:18,024 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 768 transitions. [2022-11-18 20:45:18,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 20:45:18,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:45:18,026 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:18,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-18 20:45:18,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:45:18,243 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:45:18,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:18,243 INFO L85 PathProgramCache]: Analyzing trace with hash -1773765989, now seen corresponding path program 11 times [2022-11-18 20:45:18,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:45:18,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755732052] [2022-11-18 20:45:18,243 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:45:18,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:45:18,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:45:18,244 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:45:18,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-18 20:45:18,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2022-11-18 20:45:18,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:45:18,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 20:45:18,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:45:18,717 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 8 treesize of output 7 [2022-11-18 20:45:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 96 proven. 177 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 20:45:20,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:45:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:45:31,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:45:31,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755732052] [2022-11-18 20:45:31,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755732052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:45:31,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:45:31,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 40 [2022-11-18 20:45:31,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366539022] [2022-11-18 20:45:31,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:45:31,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-18 20:45:31,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:45:31,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-18 20:45:31,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2022-11-18 20:45:31,110 INFO L87 Difference]: Start difference. First operand 644 states and 768 transitions. Second operand has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:46,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:45:46,941 INFO L93 Difference]: Finished difference Result 870 states and 1024 transitions. [2022-11-18 20:45:46,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 20:45:46,946 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-18 20:45:46,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:45:46,950 INFO L225 Difference]: With dead ends: 870 [2022-11-18 20:45:46,951 INFO L226 Difference]: Without dead ends: 867 [2022-11-18 20:45:46,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=426, Invalid=3356, Unknown=0, NotChecked=0, Total=3782 [2022-11-18 20:45:46,952 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 249 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 418 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:45:46,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1031 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 858 Invalid, 0 Unknown, 418 Unchecked, 6.8s Time] [2022-11-18 20:45:46,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2022-11-18 20:45:46,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 721. [2022-11-18 20:45:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 719 states have (on average 1.1947148817802504) internal successors, (859), 720 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 859 transitions. [2022-11-18 20:45:46,967 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 859 transitions. Word has length 78 [2022-11-18 20:45:46,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:45:46,968 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 859 transitions. [2022-11-18 20:45:46,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.625) internal successors, (145), 40 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:46,968 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 859 transitions. [2022-11-18 20:45:46,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 20:45:46,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:45:46,970 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:46,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-18 20:45:47,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:45:47,186 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:45:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:47,187 INFO L85 PathProgramCache]: Analyzing trace with hash -456068261, now seen corresponding path program 12 times [2022-11-18 20:45:47,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:45:47,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825571653] [2022-11-18 20:45:47,187 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:45:47,188 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:45:47,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:45:47,189 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:45:47,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-18 20:45:47,820 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2022-11-18 20:45:47,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:45:47,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 20:45:47,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:45:47,858 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 8 treesize of output 7 [2022-11-18 20:45:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 40 proven. 245 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:45:50,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:46:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:46:01,020 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:46:01,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825571653] [2022-11-18 20:46:01,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825571653] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:46:01,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:46:01,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22] total 42 [2022-11-18 20:46:01,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992781624] [2022-11-18 20:46:01,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:46:01,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-18 20:46:01,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:46:01,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-18 20:46:01,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1488, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 20:46:01,023 INFO L87 Difference]: Start difference. First operand 721 states and 859 transitions. Second operand has 42 states, 42 states have (on average 3.619047619047619) internal successors, (152), 42 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:46:18,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:46:18,886 INFO L93 Difference]: Finished difference Result 1005 states and 1171 transitions. [2022-11-18 20:46:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 20:46:18,888 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.619047619047619) internal successors, (152), 42 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-18 20:46:18,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:46:18,890 INFO L225 Difference]: With dead ends: 1005 [2022-11-18 20:46:18,890 INFO L226 Difference]: Without dead ends: 875 [2022-11-18 20:46:18,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=562, Invalid=3860, Unknown=0, NotChecked=0, Total=4422 [2022-11-18 20:46:18,891 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 522 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 564 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:46:18,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 1014 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1024 Invalid, 0 Unknown, 564 Unchecked, 6.9s Time] [2022-11-18 20:46:18,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-11-18 20:46:18,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 680. [2022-11-18 20:46:18,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 678 states have (on average 1.191740412979351) internal successors, (808), 679 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:46:18,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 808 transitions. [2022-11-18 20:46:18,911 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 808 transitions. Word has length 78 [2022-11-18 20:46:18,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:46:18,911 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 808 transitions. [2022-11-18 20:46:18,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.619047619047619) internal successors, (152), 42 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:46:18,912 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 808 transitions. [2022-11-18 20:46:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-18 20:46:18,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:46:18,914 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:46:18,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-18 20:46:19,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:46:19,130 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:46:19,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:46:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1922776062, now seen corresponding path program 9 times [2022-11-18 20:46:19,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:46:19,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665051758] [2022-11-18 20:46:19,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:46:19,131 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:46:19,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:46:19,132 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:46:19,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-18 20:46:19,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-18 20:46:19,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:46:19,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 20:46:19,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:46:19,892 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 8 treesize of output 7 [2022-11-18 20:46:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-18 20:46:21,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:46:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-18 20:46:29,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:46:29,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665051758] [2022-11-18 20:46:29,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665051758] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:46:29,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:46:29,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2022-11-18 20:46:29,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478604860] [2022-11-18 20:46:29,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:46:29,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:46:29,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:46:29,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:46:29,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:46:29,083 INFO L87 Difference]: Start difference. First operand 680 states and 808 transitions. Second operand has 30 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:46:37,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:46:55,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:47:07,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:47:07,699 INFO L93 Difference]: Finished difference Result 1135 states and 1322 transitions. [2022-11-18 20:47:07,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-18 20:47:07,701 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-18 20:47:07,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:47:07,702 INFO L225 Difference]: With dead ends: 1135 [2022-11-18 20:47:07,702 INFO L226 Difference]: Without dead ends: 1111 [2022-11-18 20:47:07,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1138 ImplicationChecksByTransitivity, 36.0s TimeCoverageRelationStatistics Valid=1264, Invalid=3428, Unknown=0, NotChecked=0, Total=4692 [2022-11-18 20:47:07,703 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 972 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:47:07,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 527 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 635 Invalid, 1 Unknown, 76 Unchecked, 7.3s Time] [2022-11-18 20:47:07,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-11-18 20:47:07,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 681. [2022-11-18 20:47:07,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 679 states have (on average 1.1723122238586157) internal successors, (796), 680 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 796 transitions. [2022-11-18 20:47:07,714 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 796 transitions. Word has length 80 [2022-11-18 20:47:07,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:47:07,715 INFO L495 AbstractCegarLoop]: Abstraction has 681 states and 796 transitions. [2022-11-18 20:47:07,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.2413793103448274) internal successors, (94), 30 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:47:07,715 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 796 transitions. [2022-11-18 20:47:07,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 20:47:07,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:47:07,717 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:47:07,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-18 20:47:07,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:47:07,936 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:47:07,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:47:07,937 INFO L85 PathProgramCache]: Analyzing trace with hash 797850806, now seen corresponding path program 10 times [2022-11-18 20:47:07,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:47:07,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81297925] [2022-11-18 20:47:07,937 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:47:07,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:47:07,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:47:07,938 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:47:07,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-18 20:47:08,203 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:47:08,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:47:08,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-18 20:47:08,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:47:08,241 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 8 treesize of output 7 [2022-11-18 20:47:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 248 proven. 541 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-18 20:47:11,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:47:30,685 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 813 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:47:30,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 20:47:30,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81297925] [2022-11-18 20:47:30,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81297925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:47:30,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:47:30,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 32] total 59 [2022-11-18 20:47:30,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193503665] [2022-11-18 20:47:30,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:47:30,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-18 20:47:30,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 20:47:30,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-18 20:47:30,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=442, Invalid=2980, Unknown=0, NotChecked=0, Total=3422 [2022-11-18 20:47:30,688 INFO L87 Difference]: Start difference. First operand 681 states and 796 transitions. Second operand has 59 states, 59 states have (on average 3.5762711864406778) internal successors, (211), 59 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:54,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:54,765 INFO L93 Difference]: Finished difference Result 1302 states and 1483 transitions. [2022-11-18 20:49:54,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-11-18 20:49:54,767 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.5762711864406778) internal successors, (211), 59 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2022-11-18 20:49:54,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:54,769 INFO L225 Difference]: With dead ends: 1302 [2022-11-18 20:49:54,769 INFO L226 Difference]: Without dead ends: 1296 [2022-11-18 20:49:54,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8946 ImplicationChecksByTransitivity, 105.8s TimeCoverageRelationStatistics Valid=4003, Invalid=33053, Unknown=0, NotChecked=0, Total=37056 [2022-11-18 20:49:54,772 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 2895 mSDsluCounter, 6060 mSDsCounter, 0 mSdLazyCounter, 8651 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2895 SdHoareTripleChecker+Valid, 6279 SdHoareTripleChecker+Invalid, 9690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 8651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 985 IncrementalHoareTripleChecker+Unchecked, 55.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:54,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2895 Valid, 6279 Invalid, 9690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 8651 Invalid, 0 Unknown, 985 Unchecked, 55.4s Time] [2022-11-18 20:49:54,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2022-11-18 20:49:54,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 744. [2022-11-18 20:49:54,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 744 states, 742 states have (on average 1.1711590296495957) internal successors, (869), 743 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:54,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 869 transitions. [2022-11-18 20:49:54,785 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 869 transitions. Word has length 112 [2022-11-18 20:49:54,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:54,785 INFO L495 AbstractCegarLoop]: Abstraction has 744 states and 869 transitions. [2022-11-18 20:49:54,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.5762711864406778) internal successors, (211), 59 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:54,786 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 869 transitions. [2022-11-18 20:49:54,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-18 20:49:54,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:54,787 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:54,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:55,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:49:55,002 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2022-11-18 20:49:55,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:55,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1756499401, now seen corresponding path program 13 times [2022-11-18 20:49:55,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 20:49:55,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979129691] [2022-11-18 20:49:55,003 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:49:55,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 20:49:55,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 20:49:55,004 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 20:49:55,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b9cd71-44a5-4cdf-bdc6-d4c50d1c0b23/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-18 20:49:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:55,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-18 20:49:55,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:55,283 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 8 treesize of output 7 [2022-11-18 20:49:58,610 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 256 proven. 570 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-18 20:49:58,610 INFO L328 TraceCheckSpWp]: Computing backward predicates...