./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:32:32,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:32:32,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:32:32,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:32:32,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:32:32,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:32:32,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:32:32,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:32:32,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:32:32,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:32:32,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:32:32,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:32:32,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:32:32,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:32:32,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:32:32,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:32:32,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:32:32,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:32:32,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:32:32,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:32:32,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:32:32,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:32:32,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:32:32,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:32:32,213 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:32:32,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:32:32,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:32:32,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:32:32,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:32:32,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:32:32,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:32:32,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:32:32,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:32:32,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:32:32,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:32:32,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:32:32,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:32:32,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:32:32,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:32:32,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:32:32,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:32:32,224 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 11:32:32,245 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:32:32,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:32:32,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:32:32,251 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:32:32,252 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:32:32,252 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:32:32,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:32:32,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:32:32,253 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:32:32,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:32:32,254 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:32:32,254 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:32:32,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:32:32,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:32:32,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:32:32,255 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:32:32,256 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:32:32,256 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:32:32,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:32:32,256 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:32:32,256 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:32:32,257 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:32:32,264 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:32:32,264 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:32:32,265 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:32:32,265 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:32:32,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:32:32,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:32:32,266 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:32:32,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:32:32,267 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_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d [2022-11-16 11:32:32,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:32:32,595 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:32:32,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:32:32,599 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:32:32,602 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:32:32,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-16 11:32:32,695 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/data/80716e3a1/8ec0d69f3d2d4f75b9f635b9231c7d31/FLAG9150454d9 [2022-11-16 11:32:33,219 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:32:33,219 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-16 11:32:33,230 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/data/80716e3a1/8ec0d69f3d2d4f75b9f635b9231c7d31/FLAG9150454d9 [2022-11-16 11:32:33,595 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/data/80716e3a1/8ec0d69f3d2d4f75b9f635b9231c7d31 [2022-11-16 11:32:33,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:32:33,603 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:32:33,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:32:33,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:32:33,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:32:33,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:32:33" (1/1) ... [2022-11-16 11:32:33,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c0111f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:33, skipping insertion in model container [2022-11-16 11:32:33,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:32:33" (1/1) ... [2022-11-16 11:32:33,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:32:33,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:32:33,959 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-16 11:32:33,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:32:33,992 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-16 11:32:33,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@380ab1ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:33, skipping insertion in model container [2022-11-16 11:32:33,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:32:33,996 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 11:32:33,998 INFO L158 Benchmark]: Toolchain (without parser) took 393.55ms. Allocated memory is still 104.9MB. Free memory was 62.8MB in the beginning and 79.9MB in the end (delta: -17.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:32:33,998 INFO L158 Benchmark]: CDTParser took 1.40ms. Allocated memory is still 104.9MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:32:33,999 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.14ms. Allocated memory is still 104.9MB. Free memory was 62.6MB in the beginning and 79.9MB in the end (delta: -17.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:32:34,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40ms. Allocated memory is still 104.9MB. Free memory is still 79.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.14ms. Allocated memory is still 104.9MB. Free memory was 62.6MB in the beginning and 79.9MB in the end (delta: -17.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 151]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:32:36,095 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:32:36,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:32:36,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:32:36,129 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:32:36,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:32:36,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:32:36,143 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:32:36,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:32:36,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:32:36,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:32:36,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:32:36,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:32:36,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:32:36,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:32:36,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:32:36,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:32:36,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:32:36,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:32:36,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:32:36,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:32:36,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:32:36,184 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:32:36,185 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:32:36,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:32:36,188 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:32:36,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:32:36,189 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:32:36,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:32:36,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:32:36,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:32:36,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:32:36,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:32:36,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:32:36,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:32:36,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:32:36,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:32:36,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:32:36,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:32:36,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:32:36,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:32:36,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 11:32:36,259 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:32:36,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:32:36,260 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:32:36,260 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:32:36,261 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:32:36,262 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:32:36,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:32:36,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:32:36,264 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:32:36,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:32:36,265 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:32:36,265 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:32:36,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:32:36,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:32:36,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:32:36,266 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 11:32:36,266 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 11:32:36,266 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 11:32:36,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:32:36,267 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 11:32:36,267 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 11:32:36,267 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 11:32:36,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:32:36,267 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:32:36,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:32:36,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:32:36,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:32:36,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:32:36,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:32:36,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:32:36,269 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 11:32:36,269 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 11:32:36,270 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 11:32:36,270 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_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d [2022-11-16 11:32:36,688 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:32:36,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:32:36,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:32:36,723 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:32:36,724 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:32:36,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-16 11:32:36,806 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/data/49b2e38b1/e40fa6d0e589471695a22396c68fa077/FLAG665a80270 [2022-11-16 11:32:37,428 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:32:37,429 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-16 11:32:37,439 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/data/49b2e38b1/e40fa6d0e589471695a22396c68fa077/FLAG665a80270 [2022-11-16 11:32:37,786 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/data/49b2e38b1/e40fa6d0e589471695a22396c68fa077 [2022-11-16 11:32:37,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:32:37,790 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:32:37,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:32:37,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:32:37,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:32:37,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:32:37" (1/1) ... [2022-11-16 11:32:37,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df0a331 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:37, skipping insertion in model container [2022-11-16 11:32:37,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:32:37" (1/1) ... [2022-11-16 11:32:37,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:32:37,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:32:38,135 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-16 11:32:38,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:32:38,177 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 11:32:38,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:32:38,232 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-16 11:32:38,243 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:32:38,255 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:32:38,282 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-16 11:32:38,290 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:32:38,318 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:32:38,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:38 WrapperNode [2022-11-16 11:32:38,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:32:38,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:32:38,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:32:38,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:32:38,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:38" (1/1) ... [2022-11-16 11:32:38,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:38" (1/1) ... [2022-11-16 11:32:38,409 INFO L138 Inliner]: procedures = 28, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 278 [2022-11-16 11:32:38,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:32:38,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:32:38,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:32:38,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:32:38,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:38" (1/1) ... [2022-11-16 11:32:38,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:38" (1/1) ... [2022-11-16 11:32:38,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:38" (1/1) ... [2022-11-16 11:32:38,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:38" (1/1) ... [2022-11-16 11:32:38,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:38" (1/1) ... [2022-11-16 11:32:38,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:38" (1/1) ... [2022-11-16 11:32:38,485 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:38" (1/1) ... [2022-11-16 11:32:38,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:38" (1/1) ... [2022-11-16 11:32:38,502 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:32:38,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:32:38,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:32:38,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:32:38,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:38" (1/1) ... [2022-11-16 11:32:38,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:32:38,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:32:38,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:32:38,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:32:38,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:32:38,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 11:32:38,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:32:38,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 11:32:38,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:32:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:32:38,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:32:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:32:38,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:32:38,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:32:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:32:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:32:38,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:32:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:32:38,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 11:32:38,602 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:32:38,845 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:32:38,861 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:32:39,629 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:32:39,641 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:32:39,642 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:32:39,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:32:39 BoogieIcfgContainer [2022-11-16 11:32:39,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:32:39,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:32:39,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:32:39,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:32:39,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:32:37" (1/3) ... [2022-11-16 11:32:39,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565ef65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:32:39, skipping insertion in model container [2022-11-16 11:32:39,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:32:38" (2/3) ... [2022-11-16 11:32:39,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565ef65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:32:39, skipping insertion in model container [2022-11-16 11:32:39,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:32:39" (3/3) ... [2022-11-16 11:32:39,674 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2022-11-16 11:32:39,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:32:39,695 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-16 11:32:39,696 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:32:39,919 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:32:39,974 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-16 11:32:40,000 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 364 places, 380 transitions, 784 flow [2022-11-16 11:32:40,002 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 364 places, 380 transitions, 784 flow [2022-11-16 11:32:40,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 364 places, 380 transitions, 784 flow [2022-11-16 11:32:40,169 INFO L130 PetriNetUnfolder]: 26/377 cut-off events. [2022-11-16 11:32:40,170 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:32:40,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 377 events. 26/377 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1000 event pairs, 0 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 269. Up to 2 conditions per place. [2022-11-16 11:32:40,212 INFO L119 LiptonReduction]: Number of co-enabled transitions 37914 [2022-11-16 11:33:20,600 INFO L134 LiptonReduction]: Checked pairs total: 34816 [2022-11-16 11:33:20,600 INFO L136 LiptonReduction]: Total number of compositions: 447 [2022-11-16 11:33:20,608 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 49 transitions, 122 flow [2022-11-16 11:33:20,672 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:20,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:33:20,696 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;@1837f529, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:33:20,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-16 11:33:20,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:20,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:33:20,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:20,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:33:20,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:20,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash 49827, now seen corresponding path program 1 times [2022-11-16 11:33:20,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:20,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41546867] [2022-11-16 11:33:20,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:20,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:20,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:20,735 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:20,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 11:33:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:20,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:33:20,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:21,093 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-16 11:33:21,094 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-16 11:33:21,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:21,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:21,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:21,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41546867] [2022-11-16 11:33:21,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41546867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:21,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:21,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:21,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176262818] [2022-11-16 11:33:21,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:21,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:21,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:21,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:21,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:21,172 INFO L87 Difference]: Start difference. First operand has 750 states, 616 states have (on average 4.165584415584416) internal successors, (2566), 749 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:21,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:21,498 INFO L93 Difference]: Finished difference Result 748 states and 2564 transitions. [2022-11-16 11:33:21,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:21,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:33:21,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:21,532 INFO L225 Difference]: With dead ends: 748 [2022-11-16 11:33:21,532 INFO L226 Difference]: Without dead ends: 748 [2022-11-16 11:33:21,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:21,541 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:21,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:33:21,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-11-16 11:33:21,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2022-11-16 11:33:21,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 616 states have (on average 4.162337662337662) internal successors, (2564), 747 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 2564 transitions. [2022-11-16 11:33:21,656 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 2564 transitions. Word has length 2 [2022-11-16 11:33:21,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:21,657 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 2564 transitions. [2022-11-16 11:33:21,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:21,658 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 2564 transitions. [2022-11-16 11:33:21,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:33:21,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:21,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:33:21,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:21,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:21,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:21,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:21,874 INFO L85 PathProgramCache]: Analyzing trace with hash 49828, now seen corresponding path program 1 times [2022-11-16 11:33:21,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:21,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076117269] [2022-11-16 11:33:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:21,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:21,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:21,881 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:21,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 11:33:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:21,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:33:21,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:22,115 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-16 11:33:22,115 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-16 11:33:22,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:22,152 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:22,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:22,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076117269] [2022-11-16 11:33:22,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076117269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:22,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:22,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:22,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482959207] [2022-11-16 11:33:22,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:22,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:22,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:22,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:22,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:22,156 INFO L87 Difference]: Start difference. First operand 748 states and 2564 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:22,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:22,591 INFO L93 Difference]: Finished difference Result 1494 states and 5126 transitions. [2022-11-16 11:33:22,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:22,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:33:22,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:22,608 INFO L225 Difference]: With dead ends: 1494 [2022-11-16 11:33:22,612 INFO L226 Difference]: Without dead ends: 1494 [2022-11-16 11:33:22,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:22,613 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:22,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:33:22,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-11-16 11:33:22,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 749. [2022-11-16 11:33:22,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 617 states have (on average 4.162074554294976) internal successors, (2568), 748 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 2568 transitions. [2022-11-16 11:33:22,660 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 2568 transitions. Word has length 2 [2022-11-16 11:33:22,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:22,661 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 2568 transitions. [2022-11-16 11:33:22,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:22,661 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 2568 transitions. [2022-11-16 11:33:22,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-16 11:33:22,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:22,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-16 11:33:22,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-16 11:33:22,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:22,873 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:22,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:22,875 INFO L85 PathProgramCache]: Analyzing trace with hash 50043, now seen corresponding path program 1 times [2022-11-16 11:33:22,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:22,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855923551] [2022-11-16 11:33:22,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:22,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:22,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:22,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:22,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 11:33:22,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:22,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:33:22,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:22,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:22,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:22,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:22,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855923551] [2022-11-16 11:33:22,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855923551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:22,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:22,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:22,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727760661] [2022-11-16 11:33:22,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:22,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:22,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:22,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:22,996 INFO L87 Difference]: Start difference. First operand 749 states and 2568 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:23,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:23,261 INFO L93 Difference]: Finished difference Result 749 states and 2565 transitions. [2022-11-16 11:33:23,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:23,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-16 11:33:23,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:23,268 INFO L225 Difference]: With dead ends: 749 [2022-11-16 11:33:23,268 INFO L226 Difference]: Without dead ends: 749 [2022-11-16 11:33:23,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:23,273 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:23,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:33:23,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-16 11:33:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 749. [2022-11-16 11:33:23,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 617 states have (on average 4.157212317666127) internal successors, (2565), 748 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:23,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 2565 transitions. [2022-11-16 11:33:23,301 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 2565 transitions. Word has length 2 [2022-11-16 11:33:23,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:23,301 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 2565 transitions. [2022-11-16 11:33:23,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:23,302 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 2565 transitions. [2022-11-16 11:33:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:33:23,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:23,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:33:23,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:23,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:23,515 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:23,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:23,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1551065, now seen corresponding path program 1 times [2022-11-16 11:33:23,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:23,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169058062] [2022-11-16 11:33:23,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:23,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:23,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:23,517 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:23,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 11:33:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:23,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:33:23,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:23,748 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-16 11:33:23,748 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-16 11:33:23,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:23,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:23,935 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:23,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169058062] [2022-11-16 11:33:23,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169058062] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:23,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:33:23,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-16 11:33:23,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219789085] [2022-11-16 11:33:23,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:23,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:33:23,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:23,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:33:23,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:33:23,937 INFO L87 Difference]: Start difference. First operand 749 states and 2565 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2022-11-16 11:33:25,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:25,081 INFO L93 Difference]: Finished difference Result 2241 states and 7689 transitions. [2022-11-16 11:33:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:33:25,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 3 [2022-11-16 11:33:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:25,097 INFO L225 Difference]: With dead ends: 2241 [2022-11-16 11:33:25,098 INFO L226 Difference]: Without dead ends: 2241 [2022-11-16 11:33:25,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:33:25,099 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:25,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 11:33:25,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2022-11-16 11:33:25,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 751. [2022-11-16 11:33:25,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 619 states have (on average 4.156704361873991) internal successors, (2573), 750 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2573 transitions. [2022-11-16 11:33:25,172 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2573 transitions. Word has length 3 [2022-11-16 11:33:25,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:25,173 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 2573 transitions. [2022-11-16 11:33:25,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2022-11-16 11:33:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2573 transitions. [2022-11-16 11:33:25,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 11:33:25,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:25,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 11:33:25,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:25,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:25,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:25,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1551280, now seen corresponding path program 1 times [2022-11-16 11:33:25,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:25,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693694142] [2022-11-16 11:33:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:25,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:25,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:25,389 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:25,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 11:33:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:25,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:33:25,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:25,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:25,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:25,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:25,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693694142] [2022-11-16 11:33:25,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693694142] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:25,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:33:25,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-16 11:33:25,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929571584] [2022-11-16 11:33:25,559 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:25,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:33:25,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:25,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:33:25,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:33:25,560 INFO L87 Difference]: Start difference. First operand 751 states and 2573 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2022-11-16 11:33:26,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:26,006 INFO L93 Difference]: Finished difference Result 751 states and 2567 transitions. [2022-11-16 11:33:26,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:33:26,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 3 [2022-11-16 11:33:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:26,014 INFO L225 Difference]: With dead ends: 751 [2022-11-16 11:33:26,014 INFO L226 Difference]: Without dead ends: 751 [2022-11-16 11:33:26,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:33:26,015 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:26,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:33:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-11-16 11:33:26,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2022-11-16 11:33:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 619 states have (on average 4.147011308562197) internal successors, (2567), 750 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2567 transitions. [2022-11-16 11:33:26,042 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2567 transitions. Word has length 3 [2022-11-16 11:33:26,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:26,043 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 2567 transitions. [2022-11-16 11:33:26,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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) [2022-11-16 11:33:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2567 transitions. [2022-11-16 11:33:26,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:33:26,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:26,044 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-16 11:33:26,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:26,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:26,259 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:26,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:26,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1490778169, now seen corresponding path program 2 times [2022-11-16 11:33:26,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:26,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050272550] [2022-11-16 11:33:26,266 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:33:26,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:26,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:26,267 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:26,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 11:33:26,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:33:26,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:33:26,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:33:26,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:26,519 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-16 11:33:26,519 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-16 11:33:26,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:26,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:27,154 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:33:27,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:27,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050272550] [2022-11-16 11:33:27,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050272550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:27,155 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:33:27,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-16 11:33:27,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313777955] [2022-11-16 11:33:27,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:27,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:33:27,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:27,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:33:27,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:33:27,157 INFO L87 Difference]: Start difference. First operand 751 states and 2567 transitions. Second operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:27,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:27,596 INFO L93 Difference]: Finished difference Result 750 states and 2565 transitions. [2022-11-16 11:33:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:33:27,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:33:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:27,602 INFO L225 Difference]: With dead ends: 750 [2022-11-16 11:33:27,602 INFO L226 Difference]: Without dead ends: 750 [2022-11-16 11:33:27,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:33:27,604 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:27,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:33:27,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-11-16 11:33:27,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2022-11-16 11:33:27,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 619 states have (on average 4.143780290791599) internal successors, (2565), 749 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:27,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2565 transitions. [2022-11-16 11:33:27,630 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2565 transitions. Word has length 5 [2022-11-16 11:33:27,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:27,631 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 2565 transitions. [2022-11-16 11:33:27,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:27,631 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2565 transitions. [2022-11-16 11:33:27,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:33:27,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:27,633 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-16 11:33:27,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:27,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:27,846 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:27,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1490778384, now seen corresponding path program 2 times [2022-11-16 11:33:27,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:27,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588946148] [2022-11-16 11:33:27,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:33:27,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:27,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:27,849 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:27,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 11:33:27,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:33:27,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:33:27,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:33:27,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:28,017 INFO L321 Elim1Store]: treesize reduction 111, result has 19.0 percent of original size [2022-11-16 11:33:28,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 51 [2022-11-16 11:33:28,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:28,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:28,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:28,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588946148] [2022-11-16 11:33:28,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588946148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:28,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:28,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:28,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875315935] [2022-11-16 11:33:28,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:28,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:28,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:28,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:28,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:28,108 INFO L87 Difference]: Start difference. First operand 750 states and 2565 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:28,296 INFO L93 Difference]: Finished difference Result 749 states and 2564 transitions. [2022-11-16 11:33:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:28,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:33:28,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:28,302 INFO L225 Difference]: With dead ends: 749 [2022-11-16 11:33:28,302 INFO L226 Difference]: Without dead ends: 749 [2022-11-16 11:33:28,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:28,305 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:28,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2022-11-16 11:33:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-16 11:33:28,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 749. [2022-11-16 11:33:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 619 states have (on average 4.142164781906301) internal successors, (2564), 748 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:28,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 2564 transitions. [2022-11-16 11:33:28,334 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 2564 transitions. Word has length 5 [2022-11-16 11:33:28,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:28,334 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 2564 transitions. [2022-11-16 11:33:28,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:28,335 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 2564 transitions. [2022-11-16 11:33:28,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 11:33:28,335 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:28,335 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-16 11:33:28,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:28,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:28,552 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:28,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:28,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1490778385, now seen corresponding path program 1 times [2022-11-16 11:33:28,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:28,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856594148] [2022-11-16 11:33:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:28,553 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:28,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:28,554 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:28,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 11:33:28,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:28,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:33:28,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:28,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:28,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:28,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:28,780 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-16 11:33:28,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 33 [2022-11-16 11:33:28,801 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-16 11:33:28,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-16 11:33:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:28,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:28,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:28,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856594148] [2022-11-16 11:33:28,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856594148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:28,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:28,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:28,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881959089] [2022-11-16 11:33:28,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:28,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:28,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:28,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:28,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:28,907 INFO L87 Difference]: Start difference. First operand 749 states and 2564 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:29,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:29,077 INFO L93 Difference]: Finished difference Result 748 states and 2563 transitions. [2022-11-16 11:33:29,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:29,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-16 11:33:29,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:29,082 INFO L225 Difference]: With dead ends: 748 [2022-11-16 11:33:29,082 INFO L226 Difference]: Without dead ends: 748 [2022-11-16 11:33:29,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:29,083 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:29,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-11-16 11:33:29,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-11-16 11:33:29,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2022-11-16 11:33:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 619 states have (on average 4.140549273021001) internal successors, (2563), 747 states have internal predecessors, (2563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 2563 transitions. [2022-11-16 11:33:29,107 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 2563 transitions. Word has length 5 [2022-11-16 11:33:29,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:29,108 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 2563 transitions. [2022-11-16 11:33:29,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:29,108 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 2563 transitions. [2022-11-16 11:33:29,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:33:29,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:29,109 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-16 11:33:29,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:29,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:29,321 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:29,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:29,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1881012922, now seen corresponding path program 1 times [2022-11-16 11:33:29,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:29,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192251573] [2022-11-16 11:33:29,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:29,322 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:29,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:29,323 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:29,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 11:33:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:29,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:33:29,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:29,545 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-16 11:33:29,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 40 [2022-11-16 11:33:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:29,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:29,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:29,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192251573] [2022-11-16 11:33:29,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192251573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:29,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:29,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:29,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321371255] [2022-11-16 11:33:29,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:29,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:29,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:29,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:29,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:29,736 INFO L87 Difference]: Start difference. First operand 748 states and 2563 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:29,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:29,881 INFO L93 Difference]: Finished difference Result 747 states and 2561 transitions. [2022-11-16 11:33:29,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:29,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 11:33:29,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:29,887 INFO L225 Difference]: With dead ends: 747 [2022-11-16 11:33:29,887 INFO L226 Difference]: Without dead ends: 747 [2022-11-16 11:33:29,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:29,889 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:29,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-11-16 11:33:29,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-16 11:33:29,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2022-11-16 11:33:29,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 618 states have (on average 4.144012944983818) internal successors, (2561), 746 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:29,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 2561 transitions. [2022-11-16 11:33:29,912 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 2561 transitions. Word has length 7 [2022-11-16 11:33:29,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:29,912 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 2561 transitions. [2022-11-16 11:33:29,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:29,913 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 2561 transitions. [2022-11-16 11:33:29,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 11:33:29,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:29,913 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-16 11:33:29,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:30,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:30,125 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:30,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:30,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1881012923, now seen corresponding path program 1 times [2022-11-16 11:33:30,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:30,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284197866] [2022-11-16 11:33:30,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:30,127 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:30,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:30,127 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:30,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 11:33:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:30,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 11:33:30,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:30,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:30,374 INFO L321 Elim1Store]: treesize reduction 59, result has 36.6 percent of original size [2022-11-16 11:33:30,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2022-11-16 11:33:30,388 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 42 treesize of output 38 [2022-11-16 11:33:30,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:30,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:30,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:30,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284197866] [2022-11-16 11:33:30,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284197866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:30,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:30,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:30,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766051749] [2022-11-16 11:33:30,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:30,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:30,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:30,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:30,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:30,532 INFO L87 Difference]: Start difference. First operand 747 states and 2561 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:30,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:30,680 INFO L93 Difference]: Finished difference Result 746 states and 2559 transitions. [2022-11-16 11:33:30,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:30,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-16 11:33:30,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:30,685 INFO L225 Difference]: With dead ends: 746 [2022-11-16 11:33:30,685 INFO L226 Difference]: Without dead ends: 746 [2022-11-16 11:33:30,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:30,687 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:30,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-11-16 11:33:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-16 11:33:30,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2022-11-16 11:33:30,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 617 states have (on average 4.1474878444084275) internal successors, (2559), 745 states have internal predecessors, (2559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:30,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 2559 transitions. [2022-11-16 11:33:30,711 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 2559 transitions. Word has length 7 [2022-11-16 11:33:30,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:30,712 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 2559 transitions. [2022-11-16 11:33:30,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:30,712 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 2559 transitions. [2022-11-16 11:33:30,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:33:30,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:30,713 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-16 11:33:30,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:30,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:30,924 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:30,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:30,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1818141342, now seen corresponding path program 1 times [2022-11-16 11:33:30,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:30,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547397475] [2022-11-16 11:33:30,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:30,925 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:30,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:30,926 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:30,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 11:33:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:31,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:33:31,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:31,164 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-16 11:33:31,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 40 [2022-11-16 11:33:31,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:31,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:31,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:31,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547397475] [2022-11-16 11:33:31,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547397475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:31,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:31,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:31,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498610512] [2022-11-16 11:33:31,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:31,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:31,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:31,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:31,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:31,388 INFO L87 Difference]: Start difference. First operand 746 states and 2559 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-16 11:33:31,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:31,517 INFO L93 Difference]: Finished difference Result 747 states and 2565 transitions. [2022-11-16 11:33:31,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:31,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 8 [2022-11-16 11:33:31,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:31,522 INFO L225 Difference]: With dead ends: 747 [2022-11-16 11:33:31,523 INFO L226 Difference]: Without dead ends: 747 [2022-11-16 11:33:31,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:31,523 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:31,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-11-16 11:33:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-16 11:33:31,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2022-11-16 11:33:31,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 618 states have (on average 4.150485436893204) internal successors, (2565), 746 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:31,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 2565 transitions. [2022-11-16 11:33:31,561 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 2565 transitions. Word has length 8 [2022-11-16 11:33:31,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:31,562 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 2565 transitions. [2022-11-16 11:33:31,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-16 11:33:31,562 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 2565 transitions. [2022-11-16 11:33:31,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:33:31,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:31,563 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-16 11:33:31,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:31,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:31,775 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:31,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:31,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1818141455, now seen corresponding path program 1 times [2022-11-16 11:33:31,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:31,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515692824] [2022-11-16 11:33:31,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:31,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:31,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:31,777 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:31,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 11:33:31,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:31,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:33:31,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:31,990 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-16 11:33:31,990 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-16 11:33:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:32,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:32,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:32,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515692824] [2022-11-16 11:33:32,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515692824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:32,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:32,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:33:32,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070228705] [2022-11-16 11:33:32,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:32,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:33:32,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:32,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:33:32,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:33:32,025 INFO L87 Difference]: Start difference. First operand 747 states and 2565 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2022-11-16 11:33:32,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:32,207 INFO L93 Difference]: Finished difference Result 423 states and 1417 transitions. [2022-11-16 11:33:32,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:33:32,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) 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 8 [2022-11-16 11:33:32,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:32,210 INFO L225 Difference]: With dead ends: 423 [2022-11-16 11:33:32,210 INFO L226 Difference]: Without dead ends: 423 [2022-11-16 11:33:32,210 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 [2022-11-16 11:33:32,210 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:32,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 0 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:33:32,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-16 11:33:32,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2022-11-16 11:33:32,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 375 states have (on average 3.7786666666666666) internal successors, (1417), 422 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:32,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1417 transitions. [2022-11-16 11:33:32,223 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1417 transitions. Word has length 8 [2022-11-16 11:33:32,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:32,223 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 1417 transitions. [2022-11-16 11:33:32,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2022-11-16 11:33:32,224 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1417 transitions. [2022-11-16 11:33:32,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:33:32,224 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:32,224 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-16 11:33:32,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:32,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:32,436 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:32,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1818141456, now seen corresponding path program 1 times [2022-11-16 11:33:32,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:32,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860951446] [2022-11-16 11:33:32,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:32,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:32,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:32,438 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:32,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 11:33:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:32,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:33:32,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:32,696 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-16 11:33:32,696 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-16 11:33:32,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:32,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:32,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:32,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860951446] [2022-11-16 11:33:32,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860951446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:32,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:32,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:33:32,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130250354] [2022-11-16 11:33:32,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:32,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:33:32,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:32,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:33:32,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:32,782 INFO L87 Difference]: Start difference. First operand 423 states and 1417 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:33,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:33,237 INFO L93 Difference]: Finished difference Result 671 states and 2227 transitions. [2022-11-16 11:33:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:33:33,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 11:33:33,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:33,242 INFO L225 Difference]: With dead ends: 671 [2022-11-16 11:33:33,242 INFO L226 Difference]: Without dead ends: 671 [2022-11-16 11:33:33,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:33:33,243 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 112 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:33,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 0 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:33:33,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-11-16 11:33:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 505. [2022-11-16 11:33:33,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 457 states have (on average 3.914660831509847) internal successors, (1789), 504 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:33,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1789 transitions. [2022-11-16 11:33:33,270 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1789 transitions. Word has length 8 [2022-11-16 11:33:33,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:33,271 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 1789 transitions. [2022-11-16 11:33:33,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:33,271 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1789 transitions. [2022-11-16 11:33:33,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 11:33:33,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:33,272 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-16 11:33:33,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:33,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:33,484 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:33,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:33,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1818141341, now seen corresponding path program 1 times [2022-11-16 11:33:33,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:33,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170712050] [2022-11-16 11:33:33,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:33,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:33,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:33,486 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:33,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 11:33:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:33,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:33:33,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:33,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:33,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:33,773 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-16 11:33:33,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-16 11:33:33,786 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 14 treesize of output 12 [2022-11-16 11:33:33,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:33,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:33,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:33,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170712050] [2022-11-16 11:33:33,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170712050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:33,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:33,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:33,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118205984] [2022-11-16 11:33:33,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:33,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:33,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:33,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:33,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:33,919 INFO L87 Difference]: Start difference. First operand 505 states and 1789 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-16 11:33:34,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:34,040 INFO L93 Difference]: Finished difference Result 504 states and 1786 transitions. [2022-11-16 11:33:34,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:34,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 8 [2022-11-16 11:33:34,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:34,044 INFO L225 Difference]: With dead ends: 504 [2022-11-16 11:33:34,044 INFO L226 Difference]: Without dead ends: 504 [2022-11-16 11:33:34,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:34,045 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:34,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2022-11-16 11:33:34,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-11-16 11:33:34,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2022-11-16 11:33:34,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 456 states have (on average 3.9166666666666665) internal successors, (1786), 503 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:34,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1786 transitions. [2022-11-16 11:33:34,061 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1786 transitions. Word has length 8 [2022-11-16 11:33:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:34,062 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 1786 transitions. [2022-11-16 11:33:34,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2022-11-16 11:33:34,062 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1786 transitions. [2022-11-16 11:33:34,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:33:34,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:34,063 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:34,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:34,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:34,275 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:34,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:34,276 INFO L85 PathProgramCache]: Analyzing trace with hash 527849454, now seen corresponding path program 1 times [2022-11-16 11:33:34,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:34,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880732518] [2022-11-16 11:33:34,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:34,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:34,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:34,277 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:34,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 11:33:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:34,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:33:34,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:34,528 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-16 11:33:34,528 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 3 case distinctions, treesize of input 15 treesize of output 29 [2022-11-16 11:33:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:34,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:34,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:34,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880732518] [2022-11-16 11:33:34,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880732518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:34,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:34,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:34,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343727189] [2022-11-16 11:33:34,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:34,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:34,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:34,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:34,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:34,572 INFO L87 Difference]: Start difference. First operand 504 states and 1786 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:34,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:34,754 INFO L93 Difference]: Finished difference Result 480 states and 1714 transitions. [2022-11-16 11:33:34,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:34,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 11:33:34,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:34,758 INFO L225 Difference]: With dead ends: 480 [2022-11-16 11:33:34,758 INFO L226 Difference]: Without dead ends: 480 [2022-11-16 11:33:34,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:34,759 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:34,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:33:34,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-11-16 11:33:34,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2022-11-16 11:33:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 438 states have (on average 3.91324200913242) internal successors, (1714), 479 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:34,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1714 transitions. [2022-11-16 11:33:34,774 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1714 transitions. Word has length 9 [2022-11-16 11:33:34,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:34,775 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 1714 transitions. [2022-11-16 11:33:34,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:34,775 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1714 transitions. [2022-11-16 11:33:34,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:33:34,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:34,776 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:34,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:34,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:34,988 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:34,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash 527849455, now seen corresponding path program 1 times [2022-11-16 11:33:34,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:34,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111050301] [2022-11-16 11:33:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:34,989 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:34,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:34,990 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:34,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 11:33:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:35,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 11:33:35,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:35,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:35,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:35,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:35,253 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-16 11:33:35,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2022-11-16 11:33:35,273 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 18 treesize of output 16 [2022-11-16 11:33:35,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:35,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:35,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:35,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111050301] [2022-11-16 11:33:35,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111050301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:35,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:35,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:35,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449336006] [2022-11-16 11:33:35,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:35,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:35,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:35,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:35,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:35,339 INFO L87 Difference]: Start difference. First operand 480 states and 1714 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:35,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:35,527 INFO L93 Difference]: Finished difference Result 456 states and 1642 transitions. [2022-11-16 11:33:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:35,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 11:33:35,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:35,530 INFO L225 Difference]: With dead ends: 456 [2022-11-16 11:33:35,530 INFO L226 Difference]: Without dead ends: 456 [2022-11-16 11:33:35,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:35,531 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:35,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:33:35,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-11-16 11:33:35,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2022-11-16 11:33:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 420 states have (on average 3.9095238095238094) internal successors, (1642), 455 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:35,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1642 transitions. [2022-11-16 11:33:35,552 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1642 transitions. Word has length 9 [2022-11-16 11:33:35,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:35,553 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 1642 transitions. [2022-11-16 11:33:35,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:35,553 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1642 transitions. [2022-11-16 11:33:35,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:33:35,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:35,554 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:35,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:35,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:35,755 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:35,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:35,756 INFO L85 PathProgramCache]: Analyzing trace with hash 527811711, now seen corresponding path program 1 times [2022-11-16 11:33:35,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:35,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737042571] [2022-11-16 11:33:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:35,756 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:35,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:35,757 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:35,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 11:33:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:35,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:33:35,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:36,010 INFO L321 Elim1Store]: treesize reduction 101, result has 20.5 percent of original size [2022-11-16 11:33:36,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 44 [2022-11-16 11:33:36,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:36,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:36,050 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:36,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737042571] [2022-11-16 11:33:36,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737042571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:36,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:36,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:36,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783081813] [2022-11-16 11:33:36,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:36,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:36,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:36,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:36,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:36,051 INFO L87 Difference]: Start difference. First operand 456 states and 1642 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:36,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:36,212 INFO L93 Difference]: Finished difference Result 437 states and 1588 transitions. [2022-11-16 11:33:36,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:36,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 11:33:36,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:36,225 INFO L225 Difference]: With dead ends: 437 [2022-11-16 11:33:36,225 INFO L226 Difference]: Without dead ends: 437 [2022-11-16 11:33:36,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:36,226 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:36,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:33:36,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-16 11:33:36,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2022-11-16 11:33:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 407 states have (on average 3.901719901719902) internal successors, (1588), 436 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:36,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 1588 transitions. [2022-11-16 11:33:36,241 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 1588 transitions. Word has length 9 [2022-11-16 11:33:36,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:36,241 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 1588 transitions. [2022-11-16 11:33:36,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:36,241 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 1588 transitions. [2022-11-16 11:33:36,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:33:36,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:36,242 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:36,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:36,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:36,460 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:36,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:36,460 INFO L85 PathProgramCache]: Analyzing trace with hash 527811825, now seen corresponding path program 1 times [2022-11-16 11:33:36,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:36,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129674574] [2022-11-16 11:33:36,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:36,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:36,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:36,462 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:36,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 11:33:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:36,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:33:36,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:36,720 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-16 11:33:36,721 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-16 11:33:36,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:36,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:37,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:37,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129674574] [2022-11-16 11:33:37,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129674574] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:37,131 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:33:37,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-16 11:33:37,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108961685] [2022-11-16 11:33:37,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:37,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:33:37,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:37,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:33:37,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:33:37,133 INFO L87 Difference]: Start difference. First operand 437 states and 1588 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) [2022-11-16 11:33:38,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:38,216 INFO L93 Difference]: Finished difference Result 986 states and 3349 transitions. [2022-11-16 11:33:38,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:33:38,217 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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 9 [2022-11-16 11:33:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:38,223 INFO L225 Difference]: With dead ends: 986 [2022-11-16 11:33:38,223 INFO L226 Difference]: Without dead ends: 986 [2022-11-16 11:33:38,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:33:38,224 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 262 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:38,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 0 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:33:38,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2022-11-16 11:33:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 587. [2022-11-16 11:33:38,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 557 states have (on average 4.089766606822262) internal successors, (2278), 586 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:38,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 2278 transitions. [2022-11-16 11:33:38,250 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 2278 transitions. Word has length 9 [2022-11-16 11:33:38,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:38,250 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 2278 transitions. [2022-11-16 11:33:38,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) [2022-11-16 11:33:38,251 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 2278 transitions. [2022-11-16 11:33:38,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:33:38,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:38,251 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:38,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:38,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:38,464 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:38,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash 527811710, now seen corresponding path program 1 times [2022-11-16 11:33:38,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:38,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689658485] [2022-11-16 11:33:38,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:38,465 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:38,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:38,466 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:38,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 11:33:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:38,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:33:38,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:38,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:38,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:38,768 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-16 11:33:38,769 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-16 11:33:38,782 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 14 treesize of output 12 [2022-11-16 11:33:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:38,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:38,936 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:38,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689658485] [2022-11-16 11:33:38,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689658485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:38,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:38,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:38,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656980464] [2022-11-16 11:33:38,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:38,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:38,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:38,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:38,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:38,938 INFO L87 Difference]: Start difference. First operand 587 states and 2278 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:39,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:39,057 INFO L93 Difference]: Finished difference Result 584 states and 2268 transitions. [2022-11-16 11:33:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:39,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 11:33:39,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:39,061 INFO L225 Difference]: With dead ends: 584 [2022-11-16 11:33:39,062 INFO L226 Difference]: Without dead ends: 584 [2022-11-16 11:33:39,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:39,062 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:39,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 30 Unchecked, 0.1s Time] [2022-11-16 11:33:39,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-11-16 11:33:39,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2022-11-16 11:33:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 554 states have (on average 4.093862815884476) internal successors, (2268), 583 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:39,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 2268 transitions. [2022-11-16 11:33:39,082 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 2268 transitions. Word has length 9 [2022-11-16 11:33:39,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:39,082 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 2268 transitions. [2022-11-16 11:33:39,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:39,083 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 2268 transitions. [2022-11-16 11:33:39,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 11:33:39,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:39,083 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:39,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:39,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:39,296 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:39,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:39,296 INFO L85 PathProgramCache]: Analyzing trace with hash 527812578, now seen corresponding path program 1 times [2022-11-16 11:33:39,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:39,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105239120] [2022-11-16 11:33:39,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:39,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:39,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:39,298 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:39,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 11:33:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:39,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-16 11:33:39,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:39,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:39,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:39,571 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-16 11:33:39,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-16 11:33:39,585 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 14 treesize of output 12 [2022-11-16 11:33:39,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:39,738 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:39,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:39,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105239120] [2022-11-16 11:33:39,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105239120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:39,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:39,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:39,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648462393] [2022-11-16 11:33:39,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:39,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:39,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:39,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:39,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:39,741 INFO L87 Difference]: Start difference. First operand 584 states and 2268 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:39,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:39,865 INFO L93 Difference]: Finished difference Result 585 states and 2269 transitions. [2022-11-16 11:33:39,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:39,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 11:33:39,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:39,869 INFO L225 Difference]: With dead ends: 585 [2022-11-16 11:33:39,869 INFO L226 Difference]: Without dead ends: 585 [2022-11-16 11:33:39,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:39,870 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:39,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 30 Unchecked, 0.1s Time] [2022-11-16 11:33:39,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-16 11:33:39,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-11-16 11:33:39,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 555 states have (on average 4.088288288288289) internal successors, (2269), 584 states have internal predecessors, (2269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:39,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 2269 transitions. [2022-11-16 11:33:39,891 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 2269 transitions. Word has length 9 [2022-11-16 11:33:39,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:39,891 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 2269 transitions. [2022-11-16 11:33:39,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:39,891 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 2269 transitions. [2022-11-16 11:33:39,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:33:39,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:39,892 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:39,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:40,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:40,105 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:40,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:40,105 INFO L85 PathProgramCache]: Analyzing trace with hash -816535751, now seen corresponding path program 1 times [2022-11-16 11:33:40,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:40,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604190214] [2022-11-16 11:33:40,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:40,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:40,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:40,108 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:40,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 11:33:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:40,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:33:40,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:40,363 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-16 11:33:40,363 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-16 11:33:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:40,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:40,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:40,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604190214] [2022-11-16 11:33:40,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604190214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:40,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:40,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:33:40,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914912947] [2022-11-16 11:33:40,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:40,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:33:40,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:40,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:33:40,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:40,459 INFO L87 Difference]: Start difference. First operand 585 states and 2269 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:40,805 INFO L93 Difference]: Finished difference Result 871 states and 3391 transitions. [2022-11-16 11:33:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:33:40,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 11:33:40,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:40,811 INFO L225 Difference]: With dead ends: 871 [2022-11-16 11:33:40,811 INFO L226 Difference]: Without dead ends: 871 [2022-11-16 11:33:40,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:33:40,811 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:40,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:33:40,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-16 11:33:40,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 723. [2022-11-16 11:33:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 693 states have (on average 4.26984126984127) internal successors, (2959), 722 states have internal predecessors, (2959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:40,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 2959 transitions. [2022-11-16 11:33:40,859 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 2959 transitions. Word has length 10 [2022-11-16 11:33:40,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:40,859 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 2959 transitions. [2022-11-16 11:33:40,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:40,859 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 2959 transitions. [2022-11-16 11:33:40,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 11:33:40,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:40,860 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:40,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:41,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:41,072 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:41,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:41,073 INFO L85 PathProgramCache]: Analyzing trace with hash -817700319, now seen corresponding path program 1 times [2022-11-16 11:33:41,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:41,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481353395] [2022-11-16 11:33:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:41,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:41,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:41,075 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:41,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-16 11:33:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:41,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:33:41,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:41,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:41,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 11:33:41,359 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-16 11:33:41,359 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2022-11-16 11:33:41,371 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 14 treesize of output 12 [2022-11-16 11:33:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:33:41,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:41,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:41,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481353395] [2022-11-16 11:33:41,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481353395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:41,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:41,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 11:33:41,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329654521] [2022-11-16 11:33:41,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:41,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:41,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:41,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:41,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:41,535 INFO L87 Difference]: Start difference. First operand 723 states and 2959 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-16 11:33:41,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:41,642 INFO L93 Difference]: Finished difference Result 722 states and 2958 transitions. [2022-11-16 11:33:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:41,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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 10 [2022-11-16 11:33:41,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:41,645 INFO L225 Difference]: With dead ends: 722 [2022-11-16 11:33:41,645 INFO L226 Difference]: Without dead ends: 722 [2022-11-16 11:33:41,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:41,646 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:41,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 30 Unchecked, 0.1s Time] [2022-11-16 11:33:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-16 11:33:41,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 721. [2022-11-16 11:33:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 692 states have (on average 4.273121387283237) internal successors, (2957), 720 states have internal predecessors, (2957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:41,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 2957 transitions. [2022-11-16 11:33:41,701 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 2957 transitions. Word has length 10 [2022-11-16 11:33:41,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:41,701 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 2957 transitions. [2022-11-16 11:33:41,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2022-11-16 11:33:41,702 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 2957 transitions. [2022-11-16 11:33:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:33:41,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:41,702 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:41,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:41,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:41,915 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:41,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash 457218423, now seen corresponding path program 1 times [2022-11-16 11:33:41,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:41,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73432533] [2022-11-16 11:33:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:41,916 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:41,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:41,917 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:41,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-16 11:33:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:42,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 11:33:42,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:42,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:42,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:42,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73432533] [2022-11-16 11:33:42,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73432533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:42,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:42,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:33:42,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799542064] [2022-11-16 11:33:42,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:42,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:33:42,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:42,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:33:42,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:42,081 INFO L87 Difference]: Start difference. First operand 721 states and 2957 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:42,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:42,229 INFO L93 Difference]: Finished difference Result 581 states and 2309 transitions. [2022-11-16 11:33:42,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:42,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 11:33:42,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:42,232 INFO L225 Difference]: With dead ends: 581 [2022-11-16 11:33:42,232 INFO L226 Difference]: Without dead ends: 581 [2022-11-16 11:33:42,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:33:42,233 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:42,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:33:42,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-11-16 11:33:42,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2022-11-16 11:33:42,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 560 states have (on average 4.123214285714286) internal successors, (2309), 580 states have internal predecessors, (2309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:42,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 2309 transitions. [2022-11-16 11:33:42,251 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 2309 transitions. Word has length 11 [2022-11-16 11:33:42,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:42,252 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 2309 transitions. [2022-11-16 11:33:42,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:42,252 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 2309 transitions. [2022-11-16 11:33:42,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:33:42,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:42,253 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:42,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:42,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:42,465 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:42,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:42,466 INFO L85 PathProgramCache]: Analyzing trace with hash 457218424, now seen corresponding path program 1 times [2022-11-16 11:33:42,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:42,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522528112] [2022-11-16 11:33:42,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:42,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:42,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:42,468 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:42,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-16 11:33:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:42,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:33:42,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:42,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:42,698 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:42,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522528112] [2022-11-16 11:33:42,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522528112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:42,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:42,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:33:42,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314018579] [2022-11-16 11:33:42,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:42,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:33:42,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:42,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:33:42,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:33:42,699 INFO L87 Difference]: Start difference. First operand 581 states and 2309 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:42,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:42,875 INFO L93 Difference]: Finished difference Result 441 states and 1661 transitions. [2022-11-16 11:33:42,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:42,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 11:33:42,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:42,878 INFO L225 Difference]: With dead ends: 441 [2022-11-16 11:33:42,878 INFO L226 Difference]: Without dead ends: 441 [2022-11-16 11:33:42,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:33:42,879 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:42,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:33:42,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-16 11:33:42,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-11-16 11:33:42,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 428 states have (on average 3.880841121495327) internal successors, (1661), 440 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:42,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1661 transitions. [2022-11-16 11:33:42,904 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1661 transitions. Word has length 11 [2022-11-16 11:33:42,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:42,904 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 1661 transitions. [2022-11-16 11:33:42,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:42,904 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1661 transitions. [2022-11-16 11:33:42,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:33:42,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:42,905 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:42,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-16 11:33:43,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:43,107 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:43,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:43,107 INFO L85 PathProgramCache]: Analyzing trace with hash 457198396, now seen corresponding path program 1 times [2022-11-16 11:33:43,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:43,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126255977] [2022-11-16 11:33:43,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:43,108 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:43,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:43,109 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:43,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-16 11:33:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:43,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:33:43,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:43,409 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-16 11:33:43,409 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-16 11:33:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:43,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:43,865 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:43,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126255977] [2022-11-16 11:33:43,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126255977] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:43,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:33:43,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-16 11:33:43,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413180213] [2022-11-16 11:33:43,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:43,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:33:43,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:43,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:33:43,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:33:43,867 INFO L87 Difference]: Start difference. First operand 441 states and 1661 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2022-11-16 11:33:44,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:44,767 INFO L93 Difference]: Finished difference Result 881 states and 3153 transitions. [2022-11-16 11:33:44,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:33:44,768 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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 11 [2022-11-16 11:33:44,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:44,771 INFO L225 Difference]: With dead ends: 881 [2022-11-16 11:33:44,771 INFO L226 Difference]: Without dead ends: 881 [2022-11-16 11:33:44,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:33:44,772 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 228 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:44,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 0 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:33:44,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-11-16 11:33:44,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 605. [2022-11-16 11:33:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 592 states have (on average 4.109797297297297) internal successors, (2433), 604 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 2433 transitions. [2022-11-16 11:33:44,798 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 2433 transitions. Word has length 11 [2022-11-16 11:33:44,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:44,798 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 2433 transitions. [2022-11-16 11:33:44,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 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) [2022-11-16 11:33:44,799 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 2433 transitions. [2022-11-16 11:33:44,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 11:33:44,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:44,800 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-11-16 11:33:44,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:45,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:45,012 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:45,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:45,012 INFO L85 PathProgramCache]: Analyzing trace with hash 421072081, now seen corresponding path program 2 times [2022-11-16 11:33:45,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:45,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1886094810] [2022-11-16 11:33:45,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:33:45,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:45,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:45,014 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:45,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-16 11:33:45,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:33:45,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:33:45,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:33:45,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:45,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:45,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:45,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1886094810] [2022-11-16 11:33:45,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1886094810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:45,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:33:45,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-16 11:33:45,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624050431] [2022-11-16 11:33:45,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:45,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:33:45,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:45,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:33:45,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:33:45,311 INFO L87 Difference]: Start difference. First operand 605 states and 2433 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 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) [2022-11-16 11:33:46,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:46,256 INFO L93 Difference]: Finished difference Result 1030 states and 3606 transitions. [2022-11-16 11:33:46,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:33:46,257 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 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 11 [2022-11-16 11:33:46,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:46,261 INFO L225 Difference]: With dead ends: 1030 [2022-11-16 11:33:46,261 INFO L226 Difference]: Without dead ends: 1030 [2022-11-16 11:33:46,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:33:46,262 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 231 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:46,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 0 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 11:33:46,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-16 11:33:46,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 532. [2022-11-16 11:33:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 524 states have (on average 3.984732824427481) internal successors, (2088), 531 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 2088 transitions. [2022-11-16 11:33:46,283 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 2088 transitions. Word has length 11 [2022-11-16 11:33:46,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:46,283 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 2088 transitions. [2022-11-16 11:33:46,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 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) [2022-11-16 11:33:46,284 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 2088 transitions. [2022-11-16 11:33:46,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 11:33:46,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:46,285 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:46,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:46,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:46,502 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:46,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:46,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1288869610, now seen corresponding path program 1 times [2022-11-16 11:33:46,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:46,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217500539] [2022-11-16 11:33:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:46,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:46,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:46,505 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:46,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-16 11:33:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:46,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:33:46,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:46,802 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-16 11:33:46,803 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-16 11:33:46,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:46,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:46,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:46,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217500539] [2022-11-16 11:33:46,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217500539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:46,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:46,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:33:46,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160356150] [2022-11-16 11:33:46,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:46,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:33:46,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:46,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:33:46,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:46,890 INFO L87 Difference]: Start difference. First operand 532 states and 2088 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:47,197 INFO L93 Difference]: Finished difference Result 748 states and 2958 transitions. [2022-11-16 11:33:47,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:33:47,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 [2022-11-16 11:33:47,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:47,201 INFO L225 Difference]: With dead ends: 748 [2022-11-16 11:33:47,202 INFO L226 Difference]: Without dead ends: 748 [2022-11-16 11:33:47,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:33:47,203 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:47,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 0 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:33:47,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-11-16 11:33:47,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 639. [2022-11-16 11:33:47,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 631 states have (on average 4.166402535657686) internal successors, (2629), 638 states have internal predecessors, (2629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 2629 transitions. [2022-11-16 11:33:47,225 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 2629 transitions. Word has length 12 [2022-11-16 11:33:47,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:47,225 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 2629 transitions. [2022-11-16 11:33:47,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:47,226 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 2629 transitions. [2022-11-16 11:33:47,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:33:47,227 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:47,227 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:47,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:47,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:47,439 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:47,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:47,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1300255266, now seen corresponding path program 1 times [2022-11-16 11:33:47,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:47,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800028124] [2022-11-16 11:33:47,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:47,440 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:47,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:47,441 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:47,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-16 11:33:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:47,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:33:47,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:47,720 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-16 11:33:47,721 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-16 11:33:47,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:47,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:48,181 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:48,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:48,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800028124] [2022-11-16 11:33:48,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800028124] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:48,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:33:48,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-16 11:33:48,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432145032] [2022-11-16 11:33:48,182 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:48,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:33:48,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:48,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:33:48,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:33:48,183 INFO L87 Difference]: Start difference. First operand 639 states and 2629 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:49,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:49,071 INFO L93 Difference]: Finished difference Result 1180 states and 4698 transitions. [2022-11-16 11:33:49,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:33:49,072 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 11:33:49,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:49,076 INFO L225 Difference]: With dead ends: 1180 [2022-11-16 11:33:49,076 INFO L226 Difference]: Without dead ends: 1180 [2022-11-16 11:33:49,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:33:49,077 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 153 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:49,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 0 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-16 11:33:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-11-16 11:33:49,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 853. [2022-11-16 11:33:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 845 states have (on average 4.391715976331361) internal successors, (3711), 852 states have internal predecessors, (3711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:49,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 3711 transitions. [2022-11-16 11:33:49,109 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 3711 transitions. Word has length 13 [2022-11-16 11:33:49,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:49,110 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 3711 transitions. [2022-11-16 11:33:49,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 3711 transitions. [2022-11-16 11:33:49,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 11:33:49,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:49,111 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:49,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:49,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:49,324 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:49,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:49,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1281087196, now seen corresponding path program 2 times [2022-11-16 11:33:49,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:49,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934527158] [2022-11-16 11:33:49,325 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:33:49,325 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:49,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:49,326 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:49,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-16 11:33:49,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:33:49,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:33:49,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:33:49,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:49,637 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-16 11:33:49,637 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-16 11:33:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:49,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:50,197 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:50,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934527158] [2022-11-16 11:33:50,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934527158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:50,197 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:33:50,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2022-11-16 11:33:50,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434545794] [2022-11-16 11:33:50,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:50,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:33:50,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:50,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:33:50,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:33:50,199 INFO L87 Difference]: Start difference. First operand 853 states and 3711 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:51,342 INFO L93 Difference]: Finished difference Result 1135 states and 4291 transitions. [2022-11-16 11:33:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:33:51,342 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-16 11:33:51,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:51,347 INFO L225 Difference]: With dead ends: 1135 [2022-11-16 11:33:51,347 INFO L226 Difference]: Without dead ends: 1135 [2022-11-16 11:33:51,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:33:51,348 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 379 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:51,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 0 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:33:51,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-11-16 11:33:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 736. [2022-11-16 11:33:51,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 732 states have (on average 4.26775956284153) internal successors, (3124), 735 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 3124 transitions. [2022-11-16 11:33:51,375 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 3124 transitions. Word has length 13 [2022-11-16 11:33:51,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:51,376 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 3124 transitions. [2022-11-16 11:33:51,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:51,376 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 3124 transitions. [2022-11-16 11:33:51,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:33:51,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:51,377 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:51,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:51,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:51,590 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:51,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:51,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1826573369, now seen corresponding path program 1 times [2022-11-16 11:33:51,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:51,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739027906] [2022-11-16 11:33:51,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:51,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:51,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:51,592 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:51,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-16 11:33:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:51,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:33:51,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:51,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:51,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:51,852 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:51,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739027906] [2022-11-16 11:33:51,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739027906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:51,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:51,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:33:51,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291964158] [2022-11-16 11:33:51,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:51,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:33:51,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:51,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:33:51,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:33:51,854 INFO L87 Difference]: Start difference. First operand 736 states and 3124 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:52,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:52,004 INFO L93 Difference]: Finished difference Result 694 states and 2966 transitions. [2022-11-16 11:33:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:33:52,005 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-16 11:33:52,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:52,010 INFO L225 Difference]: With dead ends: 694 [2022-11-16 11:33:52,011 INFO L226 Difference]: Without dead ends: 694 [2022-11-16 11:33:52,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:33:52,012 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:52,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:33:52,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-11-16 11:33:52,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2022-11-16 11:33:52,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 692 states have (on average 4.286127167630058) internal successors, (2966), 693 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:52,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2966 transitions. [2022-11-16 11:33:52,056 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2966 transitions. Word has length 15 [2022-11-16 11:33:52,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:52,056 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 2966 transitions. [2022-11-16 11:33:52,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:52,057 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2966 transitions. [2022-11-16 11:33:52,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-16 11:33:52,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:52,058 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:52,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-16 11:33:52,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:52,270 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:52,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:52,271 INFO L85 PathProgramCache]: Analyzing trace with hash -290075870, now seen corresponding path program 2 times [2022-11-16 11:33:52,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:52,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046294155] [2022-11-16 11:33:52,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:33:52,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:52,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:52,273 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:52,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-16 11:33:52,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:33:52,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:33:52,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 11:33:52,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:52,617 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-16 11:33:52,617 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 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-16 11:33:52,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:52,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:33:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:53,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:53,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046294155] [2022-11-16 11:33:53,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046294155] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:33:53,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:33:53,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2022-11-16 11:33:53,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176778094] [2022-11-16 11:33:53,206 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:33:53,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:33:53,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:53,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:33:53,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:33:53,207 INFO L87 Difference]: Start difference. First operand 694 states and 2966 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:54,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:54,329 INFO L93 Difference]: Finished difference Result 872 states and 3316 transitions. [2022-11-16 11:33:54,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:33:54,330 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 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 15 [2022-11-16 11:33:54,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:54,333 INFO L225 Difference]: With dead ends: 872 [2022-11-16 11:33:54,333 INFO L226 Difference]: Without dead ends: 872 [2022-11-16 11:33:54,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:33:54,334 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 183 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:54,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 0 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 11:33:54,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-16 11:33:54,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 608. [2022-11-16 11:33:54,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 4.177924217462932) internal successors, (2536), 607 states have internal predecessors, (2536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2536 transitions. [2022-11-16 11:33:54,354 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2536 transitions. Word has length 15 [2022-11-16 11:33:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:54,354 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 2536 transitions. [2022-11-16 11:33:54,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2536 transitions. [2022-11-16 11:33:54,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 11:33:54,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:54,357 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:54,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:54,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:54,570 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:54,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1980707455, now seen corresponding path program 1 times [2022-11-16 11:33:54,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:54,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [15971287] [2022-11-16 11:33:54,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:54,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:54,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:54,572 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:54,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-16 11:33:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:54,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:33:54,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:55,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:55,002 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:55,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [15971287] [2022-11-16 11:33:55,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [15971287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:55,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:55,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:33:55,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837001649] [2022-11-16 11:33:55,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:55,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:33:55,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:55,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:33:55,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:33:55,004 INFO L87 Difference]: Start difference. First operand 608 states and 2536 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:55,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:55,391 INFO L93 Difference]: Finished difference Result 779 states and 3087 transitions. [2022-11-16 11:33:55,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:33:55,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 23 [2022-11-16 11:33:55,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:55,395 INFO L225 Difference]: With dead ends: 779 [2022-11-16 11:33:55,395 INFO L226 Difference]: Without dead ends: 608 [2022-11-16 11:33:55,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:55,396 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:55,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:33:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-16 11:33:55,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2022-11-16 11:33:55,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 4.036243822075782) internal successors, (2450), 607 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2450 transitions. [2022-11-16 11:33:55,415 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2450 transitions. Word has length 23 [2022-11-16 11:33:55,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:55,415 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 2450 transitions. [2022-11-16 11:33:55,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:55,416 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2450 transitions. [2022-11-16 11:33:55,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:33:55,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:55,418 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:55,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:55,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:55,631 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:55,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:55,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1277639612, now seen corresponding path program 1 times [2022-11-16 11:33:55,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:55,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997302088] [2022-11-16 11:33:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:55,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:55,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:55,633 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:55,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-16 11:33:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:55,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:33:55,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:56,032 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:33:56,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:33:56,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:33:56,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997302088] [2022-11-16 11:33:56,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997302088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:33:56,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:33:56,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:33:56,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726323059] [2022-11-16 11:33:56,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:33:56,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:33:56,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:33:56,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:33:56,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:33:56,035 INFO L87 Difference]: Start difference. First operand 608 states and 2450 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:56,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:33:56,417 INFO L93 Difference]: Finished difference Result 717 states and 2749 transitions. [2022-11-16 11:33:56,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:33:56,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-16 11:33:56,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:33:56,420 INFO L225 Difference]: With dead ends: 717 [2022-11-16 11:33:56,420 INFO L226 Difference]: Without dead ends: 608 [2022-11-16 11:33:56,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:33:56,421 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:33:56,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 11:33:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-16 11:33:56,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2022-11-16 11:33:56,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 3.8780889621087313) internal successors, (2354), 607 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:56,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2354 transitions. [2022-11-16 11:33:56,437 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2354 transitions. Word has length 24 [2022-11-16 11:33:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:33:56,437 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 2354 transitions. [2022-11-16 11:33:56,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:33:56,438 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2354 transitions. [2022-11-16 11:33:56,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:33:56,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:33:56,440 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:33:56,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-16 11:33:56,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:56,653 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:33:56,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:33:56,653 INFO L85 PathProgramCache]: Analyzing trace with hash 252603003, now seen corresponding path program 1 times [2022-11-16 11:33:56,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:33:56,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053004762] [2022-11-16 11:33:56,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:33:56,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:33:56,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:33:56,656 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:33:56,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-16 11:33:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:33:56,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:33:56,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:33:57,542 INFO L321 Elim1Store]: treesize reduction 148, result has 8.1 percent of original size [2022-11-16 11:33:57,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 645 treesize of output 215 [2022-11-16 11:34:09,143 WARN L233 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 37 DAG size of output: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:34:09,827 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:34:09,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:34:12,057 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-16 11:34:12,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 523 treesize of output 191 [2022-11-16 11:35:18,873 WARN L233 SmtUtils]: Spent 1.08m on a formula simplification. DAG size of input: 212 DAG size of output: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:35:18,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:35:18,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:35:18,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053004762] [2022-11-16 11:35:18,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053004762] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:35:18,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:35:18,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 11:35:18,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113808770] [2022-11-16 11:35:18,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:35:18,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:35:18,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:35:18,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:35:18,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:35:18,882 INFO L87 Difference]: Start difference. First operand 608 states and 2354 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:30,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:35:30,174 INFO L93 Difference]: Finished difference Result 1895 states and 6724 transitions. [2022-11-16 11:35:30,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 11:35:30,175 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-16 11:35:30,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:35:30,180 INFO L225 Difference]: With dead ends: 1895 [2022-11-16 11:35:30,180 INFO L226 Difference]: Without dead ends: 1661 [2022-11-16 11:35:30,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 84.4s TimeCoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2022-11-16 11:35:30,181 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 179 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 510 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:35:30,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 0 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 558 Invalid, 0 Unknown, 510 Unchecked, 3.9s Time] [2022-11-16 11:35:30,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2022-11-16 11:35:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 857. [2022-11-16 11:35:30,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 856 states have (on average 3.836448598130841) internal successors, (3284), 856 states have internal predecessors, (3284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:30,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 3284 transitions. [2022-11-16 11:35:30,214 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 3284 transitions. Word has length 25 [2022-11-16 11:35:30,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:35:30,215 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 3284 transitions. [2022-11-16 11:35:30,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:35:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 3284 transitions. [2022-11-16 11:35:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:35:30,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:35:30,218 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:35:30,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-16 11:35:30,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:30,432 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:35:30,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:35:30,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1107909657, now seen corresponding path program 2 times [2022-11-16 11:35:30,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:35:30,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362257658] [2022-11-16 11:35:30,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:35:30,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:35:30,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:35:30,434 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:35:30,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-16 11:35:30,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:35:30,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:35:30,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 11:35:30,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:35:31,522 INFO L321 Elim1Store]: treesize reduction 148, result has 8.1 percent of original size [2022-11-16 11:35:31,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1004 treesize of output 322 [2022-11-16 11:35:39,195 WARN L233 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 63 DAG size of output: 59 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:35:49,898 WARN L233 SmtUtils]: Spent 9.42s on a formula simplification. DAG size of input: 72 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:35:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:35:51,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:35:54,009 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-16 11:35:54,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 619 treesize of output 217 [2022-11-16 11:36:51,783 WARN L233 SmtUtils]: Spent 56.02s on a formula simplification. DAG size of input: 196 DAG size of output: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:36:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:36:51,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:36:51,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362257658] [2022-11-16 11:36:51,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362257658] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:36:51,789 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:36:51,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 11:36:51,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900360245] [2022-11-16 11:36:51,789 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:36:51,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:36:51,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:36:51,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:36:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:36:51,790 INFO L87 Difference]: Start difference. First operand 857 states and 3284 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:36:56,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:37:07,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:37:07,711 INFO L93 Difference]: Finished difference Result 1798 states and 6683 transitions. [2022-11-16 11:37:07,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:37:07,712 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-16 11:37:07,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:37:07,718 INFO L225 Difference]: With dead ends: 1798 [2022-11-16 11:37:07,719 INFO L226 Difference]: Without dead ends: 1786 [2022-11-16 11:37:07,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 84.4s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-11-16 11:37:07,720 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 697 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:37:07,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 529 Invalid, 1 Unknown, 697 Unchecked, 6.1s Time] [2022-11-16 11:37:07,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2022-11-16 11:37:07,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 921. [2022-11-16 11:37:07,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 920 states have (on average 3.9195652173913045) internal successors, (3606), 920 states have internal predecessors, (3606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:07,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 3606 transitions. [2022-11-16 11:37:07,758 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 3606 transitions. Word has length 25 [2022-11-16 11:37:07,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:37:07,759 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 3606 transitions. [2022-11-16 11:37:07,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:07,759 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 3606 transitions. [2022-11-16 11:37:07,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:37:07,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:37:07,763 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:07,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:07,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:37:07,977 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:37:07,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:07,977 INFO L85 PathProgramCache]: Analyzing trace with hash 298953141, now seen corresponding path program 3 times [2022-11-16 11:37:07,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:37:07,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055878924] [2022-11-16 11:37:07,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:37:07,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:37:07,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:37:07,979 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:37:07,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-16 11:37:08,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 11:37:08,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:37:08,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-16 11:37:08,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:08,991 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:37:08,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 459 treesize of output 219 [2022-11-16 11:37:18,470 WARN L233 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 68 DAG size of output: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:37:27,515 WARN L233 SmtUtils]: Spent 8.21s on a formula simplification. DAG size of input: 42 DAG size of output: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:37:28,662 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:37:28,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:37:31,550 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-16 11:37:31,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 619 treesize of output 217 [2022-11-16 11:38:28,423 WARN L233 SmtUtils]: Spent 54.83s on a formula simplification. DAG size of input: 210 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:38:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:38:28,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:38:28,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055878924] [2022-11-16 11:38:28,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055878924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:38:28,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:38:28,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2022-11-16 11:38:28,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892780570] [2022-11-16 11:38:28,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:38:28,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:38:28,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:38:28,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:38:28,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:38:28,432 INFO L87 Difference]: Start difference. First operand 921 states and 3606 transitions. Second operand has 16 states, 15 states have (on average 3.066666666666667) internal successors, (46), 16 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) [2022-11-16 11:38:37,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:38:37,679 INFO L93 Difference]: Finished difference Result 1644 states and 6165 transitions. [2022-11-16 11:38:37,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 11:38:37,680 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.066666666666667) internal successors, (46), 16 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) Word has length 25 [2022-11-16 11:38:37,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:38:37,685 INFO L225 Difference]: With dead ends: 1644 [2022-11-16 11:38:37,685 INFO L226 Difference]: Without dead ends: 1625 [2022-11-16 11:38:37,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 80.8s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:38:37,687 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 102 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:38:37,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 0 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 397 Invalid, 0 Unknown, 194 Unchecked, 2.6s Time] [2022-11-16 11:38:37,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2022-11-16 11:38:37,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 965. [2022-11-16 11:38:37,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 964 states have (on average 3.8858921161825726) internal successors, (3746), 964 states have internal predecessors, (3746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:38:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 3746 transitions. [2022-11-16 11:38:37,738 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 3746 transitions. Word has length 25 [2022-11-16 11:38:37,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:38:37,738 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 3746 transitions. [2022-11-16 11:38:37,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.066666666666667) internal successors, (46), 16 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) [2022-11-16 11:38:37,739 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 3746 transitions. [2022-11-16 11:38:37,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:38:37,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:38:37,743 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:38:37,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-16 11:38:37,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:37,962 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:38:37,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:38:37,962 INFO L85 PathProgramCache]: Analyzing trace with hash 757663163, now seen corresponding path program 4 times [2022-11-16 11:38:37,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:38:37,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418806076] [2022-11-16 11:38:37,963 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:38:37,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:38:37,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:38:37,964 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:38:37,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-16 11:38:38,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:38:38,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:38:38,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:38:38,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:38:39,025 INFO L321 Elim1Store]: treesize reduction 148, result has 8.1 percent of original size [2022-11-16 11:38:39,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 645 treesize of output 215 [2022-11-16 11:38:51,452 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 65 DAG size of output: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:38:52,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:38:52,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:38:55,148 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-16 11:38:55,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 619 treesize of output 217 [2022-11-16 11:40:03,905 WARN L233 SmtUtils]: Spent 1.12m on a formula simplification. DAG size of input: 181 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:40:03,910 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:40:03,910 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:40:03,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418806076] [2022-11-16 11:40:03,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418806076] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:03,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:40:03,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 11:40:03,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465973956] [2022-11-16 11:40:03,911 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:03,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:40:03,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:40:03,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:40:03,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:40:03,913 INFO L87 Difference]: Start difference. First operand 965 states and 3746 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:09,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-16 11:40:19,829 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 125 DAG size of output: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:40:25,591 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 93 DAG size of output: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:40:27,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:40:27,246 INFO L93 Difference]: Finished difference Result 2129 states and 7806 transitions. [2022-11-16 11:40:27,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:40:27,247 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-16 11:40:27,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:40:27,253 INFO L225 Difference]: With dead ends: 2129 [2022-11-16 11:40:27,253 INFO L226 Difference]: Without dead ends: 2001 [2022-11-16 11:40:27,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 98.2s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:40:27,254 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 111 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 518 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:40:27,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 0 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 441 Invalid, 1 Unknown, 518 Unchecked, 5.6s Time] [2022-11-16 11:40:27,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2022-11-16 11:40:27,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1013. [2022-11-16 11:40:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 1012 states have (on average 3.9209486166007905) internal successors, (3968), 1012 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:27,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 3968 transitions. [2022-11-16 11:40:27,295 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 3968 transitions. Word has length 25 [2022-11-16 11:40:27,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:40:27,295 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 3968 transitions. [2022-11-16 11:40:27,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:40:27,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 3968 transitions. [2022-11-16 11:40:27,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:40:27,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:40:27,299 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:40:27,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-16 11:40:27,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:40:27,511 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:40:27,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:40:27,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1251594969, now seen corresponding path program 5 times [2022-11-16 11:40:27,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:40:27,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923294171] [2022-11-16 11:40:27,512 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:40:27,512 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:40:27,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:40:27,514 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:40:27,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-16 11:40:27,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-16 11:40:27,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:40:27,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 11:40:27,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:40:28,797 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:40:28,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 583 treesize of output 263 [2022-11-16 11:40:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:40:40,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:40:44,637 INFO L321 Elim1Store]: treesize reduction 168, result has 2.9 percent of original size [2022-11-16 11:40:44,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 628 treesize of output 199 [2022-11-16 11:40:44,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:40:44,988 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:40:44,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923294171] [2022-11-16 11:40:44,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923294171] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:40:44,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:40:44,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2022-11-16 11:40:44,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393778790] [2022-11-16 11:40:44,989 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:40:44,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 11:40:44,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:40:44,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 11:40:44,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-16 11:40:44,993 INFO L87 Difference]: Start difference. First operand 1013 states and 3968 transitions. Second operand has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 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) [2022-11-16 11:41:39,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:41:39,001 INFO L93 Difference]: Finished difference Result 2771 states and 10014 transitions. [2022-11-16 11:41:39,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-16 11:41:39,002 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 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) Word has length 25 [2022-11-16 11:41:39,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:41:39,013 INFO L225 Difference]: With dead ends: 2771 [2022-11-16 11:41:39,013 INFO L226 Difference]: Without dead ends: 2754 [2022-11-16 11:41:39,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 54.2s TimeCoverageRelationStatistics Valid=933, Invalid=4179, Unknown=0, NotChecked=0, Total=5112 [2022-11-16 11:41:39,015 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 344 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 467 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:41:39,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 0 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1088 Invalid, 0 Unknown, 467 Unchecked, 11.8s Time] [2022-11-16 11:41:39,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2022-11-16 11:41:39,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 1026. [2022-11-16 11:41:39,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1025 states have (on average 3.939512195121951) internal successors, (4038), 1025 states have internal predecessors, (4038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:41:39,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 4038 transitions. [2022-11-16 11:41:39,063 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 4038 transitions. Word has length 25 [2022-11-16 11:41:39,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:41:39,063 INFO L495 AbstractCegarLoop]: Abstraction has 1026 states and 4038 transitions. [2022-11-16 11:41:39,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 20 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) [2022-11-16 11:41:39,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 4038 transitions. [2022-11-16 11:41:39,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:41:39,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:41:39,067 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:41:39,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-16 11:41:39,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:39,282 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:41:39,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:41:39,282 INFO L85 PathProgramCache]: Analyzing trace with hash -894489433, now seen corresponding path program 6 times [2022-11-16 11:41:39,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:41:39,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254343770] [2022-11-16 11:41:39,283 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:41:39,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:41:39,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:41:39,284 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:41:39,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-16 11:41:39,742 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-16 11:41:39,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:41:39,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:41:39,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:41:41,088 INFO L321 Elim1Store]: treesize reduction 148, result has 8.1 percent of original size [2022-11-16 11:41:41,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 769 treesize of output 265 [2022-11-16 11:41:48,255 WARN L233 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 67 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:42:00,892 WARN L233 SmtUtils]: Spent 6.45s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:42:04,953 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:42:04,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:42:09,369 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-16 11:42:09,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 667 treesize of output 243 [2022-11-16 11:44:41,552 WARN L233 SmtUtils]: Spent 2.43m on a formula simplification. DAG size of input: 222 DAG size of output: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:44:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:44:41,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:44:41,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254343770] [2022-11-16 11:44:41,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254343770] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:44:41,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:44:41,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-16 11:44:41,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875941558] [2022-11-16 11:44:41,558 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:44:41,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:44:41,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:44:41,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:44:41,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:44:41,560 INFO L87 Difference]: Start difference. First operand 1026 states and 4038 transitions. Second operand has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:00,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:00,590 INFO L93 Difference]: Finished difference Result 1665 states and 6415 transitions. [2022-11-16 11:45:00,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:45:00,592 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-16 11:45:00,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:00,597 INFO L225 Difference]: With dead ends: 1665 [2022-11-16 11:45:00,597 INFO L226 Difference]: Without dead ends: 1662 [2022-11-16 11:45:00,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 183.4s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:45:00,598 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 148 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 369 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:00,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 0 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 464 Invalid, 0 Unknown, 369 Unchecked, 5.1s Time] [2022-11-16 11:45:00,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2022-11-16 11:45:00,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1027. [2022-11-16 11:45:00,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 1026 states have (on average 3.93859649122807) internal successors, (4041), 1026 states have internal predecessors, (4041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:00,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 4041 transitions. [2022-11-16 11:45:00,638 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 4041 transitions. Word has length 25 [2022-11-16 11:45:00,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:00,639 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 4041 transitions. [2022-11-16 11:45:00,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:45:00,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 4041 transitions. [2022-11-16 11:45:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:45:00,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:00,643 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:45:00,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-16 11:45:00,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:45:00,861 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:45:00,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:00,862 INFO L85 PathProgramCache]: Analyzing trace with hash -446607745, now seen corresponding path program 7 times [2022-11-16 11:45:00,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:45:00,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026488851] [2022-11-16 11:45:00,863 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:45:00,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:45:00,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:45:00,865 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:45:00,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-16 11:45:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:45:01,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:45:01,940 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 11:45:01,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 533 treesize of output 203 [2022-11-16 11:45:15,538 WARN L233 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 39 DAG size of output: 34 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:45:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:45:16,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:45:19,177 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-16 11:45:19,178 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 523 treesize of output 191 [2022-11-16 11:46:24,525 WARN L233 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 231 DAG size of output: 63 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:46:24,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:46:24,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 11:46:24,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026488851] [2022-11-16 11:46:24,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026488851] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:46:24,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 11:46:24,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 11:46:24,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051685877] [2022-11-16 11:46:24,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 11:46:24,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:46:24,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 11:46:24,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:46:24,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:46:24,532 INFO L87 Difference]: Start difference. First operand 1027 states and 4041 transitions. Second operand has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:33,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:33,943 INFO L93 Difference]: Finished difference Result 2024 states and 7507 transitions. [2022-11-16 11:46:33,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:46:33,945 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-16 11:46:33,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:33,950 INFO L225 Difference]: With dead ends: 2024 [2022-11-16 11:46:33,950 INFO L226 Difference]: Without dead ends: 1925 [2022-11-16 11:46:33,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 83.4s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2022-11-16 11:46:33,951 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 121 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 393 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:33,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 0 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 455 Invalid, 0 Unknown, 393 Unchecked, 3.7s Time] [2022-11-16 11:46:33,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2022-11-16 11:46:33,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 975. [2022-11-16 11:46:33,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 3.9681724845995894) internal successors, (3865), 974 states have internal predecessors, (3865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 3865 transitions. [2022-11-16 11:46:33,992 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 3865 transitions. Word has length 25 [2022-11-16 11:46:33,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:33,992 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 3865 transitions. [2022-11-16 11:46:33,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.0) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:46:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 3865 transitions. [2022-11-16 11:46:33,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 11:46:33,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:33,995 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:46:34,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-16 11:46:34,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:34,211 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-16 11:46:34,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:34,212 INFO L85 PathProgramCache]: Analyzing trace with hash -144639755, now seen corresponding path program 8 times [2022-11-16 11:46:34,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 11:46:34,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720571257] [2022-11-16 11:46:34,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:46:34,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 11:46:34,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 11:46:34,214 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 11:46:34,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1fa6388-087b-41d2-ad4f-2cc47f821ede/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-16 11:46:34,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:46:34,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:46:34,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 11:46:34,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:36,182 INFO L321 Elim1Store]: treesize reduction 148, result has 8.1 percent of original size [2022-11-16 11:46:36,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 631 treesize of output 215 [2022-11-16 11:46:46,849 WARN L233 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-16 11:46:54,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:46:54,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:46:59,370 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-16 11:46:59,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 604 treesize of output 228