./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/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_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-8393723 [2022-11-18 19:45:38,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:45:38,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:45:38,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:45:38,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:45:38,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:45:38,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:45:38,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:45:38,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:45:38,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:45:38,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:45:38,248 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:45:38,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:45:38,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:45:38,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:45:38,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:45:38,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:45:38,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:45:38,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:45:38,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:45:38,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:45:38,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:45:38,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:45:38,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:45:38,293 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:45:38,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:45:38,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:45:38,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:45:38,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:45:38,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:45:38,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:45:38,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:45:38,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:45:38,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:45:38,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:45:38,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:45:38,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:45:38,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:45:38,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:45:38,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:45:38,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:45:38,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 19:45:38,362 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:45:38,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:45:38,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:45:38,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:45:38,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:45:38,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:45:38,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:45:38,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:45:38,367 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:45:38,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:45:38,369 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:45:38,369 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:45:38,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:45:38,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:45:38,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:45:38,370 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:45:38,371 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:45:38,371 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:45:38,371 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:45:38,372 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:45:38,372 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:45:38,372 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:45:38,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:45:38,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:45:38,373 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:45:38,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:45:38,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:45:38,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:45:38,374 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:45:38,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:45:38,375 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_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d [2022-11-18 19:45:38,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:45:38,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:45:38,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:45:38,722 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:45:38,723 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:45:38,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-18 19:45:38,832 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/data/c3883b78c/f708aff176c94c1a8c85cf06ea387b82/FLAG71ac9bceb [2022-11-18 19:45:39,395 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:45:39,396 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-18 19:45:39,403 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/data/c3883b78c/f708aff176c94c1a8c85cf06ea387b82/FLAG71ac9bceb [2022-11-18 19:45:39,738 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/data/c3883b78c/f708aff176c94c1a8c85cf06ea387b82 [2022-11-18 19:45:39,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:45:39,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:45:39,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:45:39,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:45:39,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:45:39,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:45:39" (1/1) ... [2022-11-18 19:45:39,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b03075 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:39, skipping insertion in model container [2022-11-18 19:45:39,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:45:39" (1/1) ... [2022-11-18 19:45:39,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:45:39,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:45:40,037 WARN L234 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_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-18 19:45:40,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:45:40,059 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-18 19:45:40,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@32e5b6b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:40, skipping insertion in model container [2022-11-18 19:45:40,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:45:40,061 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-18 19:45:40,063 INFO L158 Benchmark]: Toolchain (without parser) took 320.22ms. Allocated memory is still 121.6MB. Free memory was 94.1MB in the beginning and 95.3MB in the end (delta: -1.2MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2022-11-18 19:45:40,063 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 121.6MB. Free memory was 76.7MB in the beginning and 76.6MB in the end (delta: 72.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:45:40,064 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.46ms. Allocated memory is still 121.6MB. Free memory was 93.8MB in the beginning and 95.5MB in the end (delta: -1.7MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2022-11-18 19:45:40,066 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74ms. Allocated memory is still 121.6MB. Free memory was 76.7MB in the beginning and 76.6MB in the end (delta: 72.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.46ms. Allocated memory is still 121.6MB. Free memory was 93.8MB in the beginning and 95.5MB in the end (delta: -1.7MB). Peak memory consumption was 6.6MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/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_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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-8393723 [2022-11-18 19:45:42,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:45:42,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:45:42,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:45:42,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:45:42,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:45:42,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:45:42,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:45:42,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:45:42,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:45:42,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:45:42,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:45:42,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:45:42,411 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:45:42,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:45:42,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:45:42,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:45:42,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:45:42,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:45:42,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:45:42,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:45:42,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:45:42,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:45:42,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:45:42,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:45:42,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:45:42,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:45:42,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:45:42,452 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:45:42,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:45:42,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:45:42,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:45:42,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:45:42,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:45:42,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:45:42,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:45:42,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:45:42,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:45:42,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:45:42,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:45:42,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:45:42,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 19:45:42,515 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:45:42,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:45:42,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:45:42,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:45:42,519 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:45:42,519 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:45:42,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:45:42,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:45:42,522 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:45:42,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:45:42,523 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:45:42,524 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:45:42,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:45:42,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:45:42,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:45:42,525 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:45:42,525 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:45:42,526 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:45:42,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:45:42,526 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:45:42,526 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 19:45:42,527 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 19:45:42,527 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:45:42,527 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:45:42,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:45:42,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:45:42,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:45:42,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:45:42,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:45:42,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:45:42,529 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 19:45:42,530 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 19:45:42,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 19:45:42,530 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_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d [2022-11-18 19:45:42,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:45:42,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:45:43,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:45:43,003 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:45:43,004 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:45:43,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-18 19:45:43,083 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/data/0725ed246/9e707c55d7f141ee8f111f47ff624f49/FLAG07c40084b [2022-11-18 19:45:43,651 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:45:43,651 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-18 19:45:43,659 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/data/0725ed246/9e707c55d7f141ee8f111f47ff624f49/FLAG07c40084b [2022-11-18 19:45:44,015 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/data/0725ed246/9e707c55d7f141ee8f111f47ff624f49 [2022-11-18 19:45:44,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:45:44,019 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:45:44,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:45:44,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:45:44,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:45:44,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:45:44" (1/1) ... [2022-11-18 19:45:44,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c65eed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44, skipping insertion in model container [2022-11-18 19:45:44,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:45:44" (1/1) ... [2022-11-18 19:45:44,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:45:44,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:45:44,251 WARN L234 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_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-18 19:45:44,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:45:44,320 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-18 19:45:44,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:45:44,349 WARN L234 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_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-18 19:45:44,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:45:44,361 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:45:44,396 WARN L234 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_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-18 19:45:44,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:45:44,418 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:45:44,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44 WrapperNode [2022-11-18 19:45:44,418 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:45:44,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:45:44,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:45:44,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:45:44,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44" (1/1) ... [2022-11-18 19:45:44,439 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44" (1/1) ... [2022-11-18 19:45:44,476 INFO L138 Inliner]: procedures = 28, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 278 [2022-11-18 19:45:44,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:45:44,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:45:44,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:45:44,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:45:44,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44" (1/1) ... [2022-11-18 19:45:44,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44" (1/1) ... [2022-11-18 19:45:44,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44" (1/1) ... [2022-11-18 19:45:44,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44" (1/1) ... [2022-11-18 19:45:44,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44" (1/1) ... [2022-11-18 19:45:44,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44" (1/1) ... [2022-11-18 19:45:44,530 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44" (1/1) ... [2022-11-18 19:45:44,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44" (1/1) ... [2022-11-18 19:45:44,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:45:44,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:45:44,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:45:44,537 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:45:44,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44" (1/1) ... [2022-11-18 19:45:44,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:45:44,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:45:44,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:45:44,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:45:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:45:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 19:45:44,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:45:44,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-18 19:45:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:45:44,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:45:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:45:44,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:45:44,634 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:45:44,634 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:45:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:45:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:45:44,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:45:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:45:44,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 19:45:44,637 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:45:44,872 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:45:44,874 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:45:45,781 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:45:45,793 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:45:45,793 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 19:45:45,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:45:45 BoogieIcfgContainer [2022-11-18 19:45:45,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:45:45,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:45:45,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:45:45,818 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:45:45,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:45:44" (1/3) ... [2022-11-18 19:45:45,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337aac99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:45:45, skipping insertion in model container [2022-11-18 19:45:45,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:45:44" (2/3) ... [2022-11-18 19:45:45,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337aac99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:45:45, skipping insertion in model container [2022-11-18 19:45:45,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:45:45" (3/3) ... [2022-11-18 19:45:45,821 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2022-11-18 19:45:45,840 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:45:45,840 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-18 19:45:45,840 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:45:45,984 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:45:46,047 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 19:45:46,076 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 364 places, 380 transitions, 784 flow [2022-11-18 19:45:46,078 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 364 places, 380 transitions, 784 flow [2022-11-18 19:45:46,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 364 places, 380 transitions, 784 flow [2022-11-18 19:45:46,253 INFO L130 PetriNetUnfolder]: 26/377 cut-off events. [2022-11-18 19:45:46,253 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:45:46,264 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. [2022-11-18 19:45:46,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 37914 [2022-11-18 19:46:26,482 INFO L134 LiptonReduction]: Checked pairs total: 34816 [2022-11-18 19:46:26,482 INFO L136 LiptonReduction]: Total number of compositions: 447 [2022-11-18 19:46:26,491 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 49 transitions, 122 flow [2022-11-18 19:46:26,591 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) [2022-11-18 19:46:26,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:46:26,622 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;@d32fb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:46:26,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2022-11-18 19:46:26,627 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) [2022-11-18 19:46:26,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:46:26,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:26,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:46:26,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:26,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:26,668 INFO L85 PathProgramCache]: Analyzing trace with hash 49827, now seen corresponding path program 1 times [2022-11-18 19:46:26,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:26,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040830081] [2022-11-18 19:46:26,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:26,682 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:26,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:26,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:26,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 19:46:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:26,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:46:26,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:27,063 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 19:46:27,064 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 [2022-11-18 19:46:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:27,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:27,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:27,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040830081] [2022-11-18 19:46:27,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040830081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:27,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:27,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:27,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973061475] [2022-11-18 19:46:27,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:27,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:27,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:27,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:27,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:27,136 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) [2022-11-18 19:46:27,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:27,413 INFO L93 Difference]: Finished difference Result 748 states and 2564 transitions. [2022-11-18 19:46:27,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:27,417 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 [2022-11-18 19:46:27,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:27,449 INFO L225 Difference]: With dead ends: 748 [2022-11-18 19:46:27,449 INFO L226 Difference]: Without dead ends: 748 [2022-11-18 19:46:27,450 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 [2022-11-18 19:46:27,454 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:27,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:46:27,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-11-18 19:46:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2022-11-18 19:46:27,565 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) [2022-11-18 19:46:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 2564 transitions. [2022-11-18 19:46:27,580 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 2564 transitions. Word has length 2 [2022-11-18 19:46:27,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:27,581 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 2564 transitions. [2022-11-18 19:46:27,581 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) [2022-11-18 19:46:27,582 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 2564 transitions. [2022-11-18 19:46:27,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:46:27,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:27,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:46:27,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:27,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:27,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:27,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:27,795 INFO L85 PathProgramCache]: Analyzing trace with hash 49828, now seen corresponding path program 1 times [2022-11-18 19:46:27,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:27,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129013377] [2022-11-18 19:46:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:27,796 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:27,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:27,798 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:27,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 19:46:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:27,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:46:27,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:28,030 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:46:28,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-18 19:46:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:28,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:28,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:28,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129013377] [2022-11-18 19:46:28,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129013377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:28,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:28,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:28,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480947708] [2022-11-18 19:46:28,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:28,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:28,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:28,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:28,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:28,065 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) [2022-11-18 19:46:28,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:28,570 INFO L93 Difference]: Finished difference Result 1494 states and 5126 transitions. [2022-11-18 19:46:28,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:28,571 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 [2022-11-18 19:46:28,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:28,583 INFO L225 Difference]: With dead ends: 1494 [2022-11-18 19:46:28,584 INFO L226 Difference]: Without dead ends: 1494 [2022-11-18 19:46:28,584 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 [2022-11-18 19:46:28,585 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:28,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:46:28,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-11-18 19:46:28,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 749. [2022-11-18 19:46:28,618 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) [2022-11-18 19:46:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 2568 transitions. [2022-11-18 19:46:28,624 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 2568 transitions. Word has length 2 [2022-11-18 19:46:28,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:28,624 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 2568 transitions. [2022-11-18 19:46:28,624 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) [2022-11-18 19:46:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 2568 transitions. [2022-11-18 19:46:28,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-18 19:46:28,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:28,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-18 19:46:28,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:46:28,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:28,837 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:28,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:28,838 INFO L85 PathProgramCache]: Analyzing trace with hash 50043, now seen corresponding path program 1 times [2022-11-18 19:46:28,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:28,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718291025] [2022-11-18 19:46:28,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:28,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:28,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:28,840 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:28,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 19:46:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:28,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:46:28,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:28,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:28,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:28,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:28,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718291025] [2022-11-18 19:46:28,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718291025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:28,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:28,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:28,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056651403] [2022-11-18 19:46:28,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:28,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:28,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:28,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:28,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:28,945 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) [2022-11-18 19:46:29,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:29,207 INFO L93 Difference]: Finished difference Result 749 states and 2565 transitions. [2022-11-18 19:46:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:29,208 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 [2022-11-18 19:46:29,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:29,213 INFO L225 Difference]: With dead ends: 749 [2022-11-18 19:46:29,213 INFO L226 Difference]: Without dead ends: 749 [2022-11-18 19:46:29,214 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 [2022-11-18 19:46:29,214 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:29,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:46:29,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-18 19:46:29,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 749. [2022-11-18 19:46:29,237 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) [2022-11-18 19:46:29,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 2565 transitions. [2022-11-18 19:46:29,241 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 2565 transitions. Word has length 2 [2022-11-18 19:46:29,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:29,242 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 2565 transitions. [2022-11-18 19:46:29,242 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) [2022-11-18 19:46:29,242 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 2565 transitions. [2022-11-18 19:46:29,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:46:29,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:29,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:46:29,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:29,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:29,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:29,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:29,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1551065, now seen corresponding path program 1 times [2022-11-18 19:46:29,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:29,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926735577] [2022-11-18 19:46:29,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:29,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:29,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:29,458 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:29,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 19:46:29,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:29,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:46:29,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:29,675 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:46:29,676 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-18 19:46:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:29,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:29,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:29,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:29,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926735577] [2022-11-18 19:46:29,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926735577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:29,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:46:29,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 19:46:29,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135892936] [2022-11-18 19:46:29,874 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:29,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:29,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:29,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:29,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:29,875 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) [2022-11-18 19:46:31,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:31,183 INFO L93 Difference]: Finished difference Result 2241 states and 7689 transitions. [2022-11-18 19:46:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:46:31,184 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 [2022-11-18 19:46:31,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:31,204 INFO L225 Difference]: With dead ends: 2241 [2022-11-18 19:46:31,205 INFO L226 Difference]: Without dead ends: 2241 [2022-11-18 19:46:31,210 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 [2022-11-18 19:46:31,212 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 120 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:31,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 0 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 19:46:31,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2022-11-18 19:46:31,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 751. [2022-11-18 19:46:31,256 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) [2022-11-18 19:46:31,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2573 transitions. [2022-11-18 19:46:31,260 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2573 transitions. Word has length 3 [2022-11-18 19:46:31,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:31,261 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 2573 transitions. [2022-11-18 19:46:31,261 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) [2022-11-18 19:46:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2573 transitions. [2022-11-18 19:46:31,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 19:46:31,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:31,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 19:46:31,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:31,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:31,474 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:31,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:31,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1551280, now seen corresponding path program 1 times [2022-11-18 19:46:31,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:31,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709817841] [2022-11-18 19:46:31,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:31,475 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:31,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:31,476 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:31,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 19:46:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:31,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:46:31,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:31,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:31,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:31,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709817841] [2022-11-18 19:46:31,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709817841] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:31,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:46:31,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-18 19:46:31,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222338807] [2022-11-18 19:46:31,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:31,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:31,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:31,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:31,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:31,655 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) [2022-11-18 19:46:32,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:32,095 INFO L93 Difference]: Finished difference Result 751 states and 2567 transitions. [2022-11-18 19:46:32,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:46:32,095 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 [2022-11-18 19:46:32,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:32,102 INFO L225 Difference]: With dead ends: 751 [2022-11-18 19:46:32,102 INFO L226 Difference]: Without dead ends: 751 [2022-11-18 19:46:32,102 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 [2022-11-18 19:46:32,103 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 [2022-11-18 19:46:32,103 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] [2022-11-18 19:46:32,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-11-18 19:46:32,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 751. [2022-11-18 19:46:32,123 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) [2022-11-18 19:46:32,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 2567 transitions. [2022-11-18 19:46:32,127 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 2567 transitions. Word has length 3 [2022-11-18 19:46:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:32,128 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 2567 transitions. [2022-11-18 19:46:32,128 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) [2022-11-18 19:46:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 2567 transitions. [2022-11-18 19:46:32,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:46:32,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:32,129 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-18 19:46:32,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -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 [2022-11-18 19:46:32,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:32,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:32,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:32,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1490778169, now seen corresponding path program 2 times [2022-11-18 19:46:32,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:32,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30195799] [2022-11-18 19:46:32,341 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:46:32,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:32,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:32,342 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:32,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 19:46:32,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:46:32,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:32,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:46:32,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:32,571 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-18 19:46:32,571 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 [2022-11-18 19:46:32,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:32,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:33,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:33,208 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:33,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30195799] [2022-11-18 19:46:33,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30195799] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:33,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:46:33,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-18 19:46:33,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961668279] [2022-11-18 19:46:33,209 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:33,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:46:33,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:33,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:46:33,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:46:33,210 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) [2022-11-18 19:46:33,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:33,648 INFO L93 Difference]: Finished difference Result 750 states and 2565 transitions. [2022-11-18 19:46:33,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:46:33,649 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 [2022-11-18 19:46:33,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:33,654 INFO L225 Difference]: With dead ends: 750 [2022-11-18 19:46:33,654 INFO L226 Difference]: Without dead ends: 750 [2022-11-18 19:46:33,654 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 [2022-11-18 19:46:33,655 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 [2022-11-18 19:46:33,655 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] [2022-11-18 19:46:33,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 750 states. [2022-11-18 19:46:33,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 750 to 750. [2022-11-18 19:46:33,688 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) [2022-11-18 19:46:33,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2565 transitions. [2022-11-18 19:46:33,692 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2565 transitions. Word has length 5 [2022-11-18 19:46:33,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:33,692 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 2565 transitions. [2022-11-18 19:46:33,693 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) [2022-11-18 19:46:33,693 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2565 transitions. [2022-11-18 19:46:33,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:46:33,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:33,695 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-18 19:46:33,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:33,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:33,908 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:33,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:33,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1490778384, now seen corresponding path program 2 times [2022-11-18 19:46:33,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:33,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959939213] [2022-11-18 19:46:33,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:46:33,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:33,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:33,910 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:33,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 19:46:33,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:46:33,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:33,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:46:33,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:34,078 INFO L321 Elim1Store]: treesize reduction 111, result has 19.0 percent of original size [2022-11-18 19:46:34,079 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 [2022-11-18 19:46:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:34,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:34,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:34,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959939213] [2022-11-18 19:46:34,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959939213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:34,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:34,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:34,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784943726] [2022-11-18 19:46:34,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:34,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:34,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:34,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:34,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:34,172 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) [2022-11-18 19:46:34,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:34,347 INFO L93 Difference]: Finished difference Result 749 states and 2564 transitions. [2022-11-18 19:46:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:34,348 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 [2022-11-18 19:46:34,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:34,353 INFO L225 Difference]: With dead ends: 749 [2022-11-18 19:46:34,353 INFO L226 Difference]: Without dead ends: 749 [2022-11-18 19:46:34,353 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 [2022-11-18 19:46:34,354 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 [2022-11-18 19:46:34,356 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] [2022-11-18 19:46:34,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-18 19:46:34,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 749. [2022-11-18 19:46:34,379 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) [2022-11-18 19:46:34,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 2564 transitions. [2022-11-18 19:46:34,384 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 2564 transitions. Word has length 5 [2022-11-18 19:46:34,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:34,385 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 2564 transitions. [2022-11-18 19:46:34,385 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) [2022-11-18 19:46:34,385 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 2564 transitions. [2022-11-18 19:46:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:46:34,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:34,386 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-11-18 19:46:34,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:34,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:34,597 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:34,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:34,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1490778385, now seen corresponding path program 1 times [2022-11-18 19:46:34,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:34,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560207131] [2022-11-18 19:46:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:34,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:34,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:34,599 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:34,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 19:46:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:34,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:46:34,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:34,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:34,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:34,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:34,852 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2022-11-18 19:46:34,852 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 [2022-11-18 19:46:34,875 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-18 19:46:34,875 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 [2022-11-18 19:46:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:35,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:35,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:35,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560207131] [2022-11-18 19:46:35,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560207131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:35,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:35,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:35,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310449199] [2022-11-18 19:46:35,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:35,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:35,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:35,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:35,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:35,005 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) [2022-11-18 19:46:35,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:35,182 INFO L93 Difference]: Finished difference Result 748 states and 2563 transitions. [2022-11-18 19:46:35,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:35,182 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 [2022-11-18 19:46:35,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:35,187 INFO L225 Difference]: With dead ends: 748 [2022-11-18 19:46:35,188 INFO L226 Difference]: Without dead ends: 748 [2022-11-18 19:46:35,188 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 [2022-11-18 19:46:35,188 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-18 19:46:35,189 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] [2022-11-18 19:46:35,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-11-18 19:46:35,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2022-11-18 19:46:35,211 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) [2022-11-18 19:46:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 2563 transitions. [2022-11-18 19:46:35,214 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 2563 transitions. Word has length 5 [2022-11-18 19:46:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:35,215 INFO L495 AbstractCegarLoop]: Abstraction has 748 states and 2563 transitions. [2022-11-18 19:46:35,215 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) [2022-11-18 19:46:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 2563 transitions. [2022-11-18 19:46:35,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:46:35,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:35,216 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-18 19:46:35,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:35,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:35,428 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:35,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:35,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1881012922, now seen corresponding path program 1 times [2022-11-18 19:46:35,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:35,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638051561] [2022-11-18 19:46:35,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:35,429 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:35,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:35,430 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:35,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 19:46:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:35,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:46:35,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:35,650 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 19:46:35,651 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 [2022-11-18 19:46:35,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:35,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:35,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:35,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638051561] [2022-11-18 19:46:35,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638051561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:35,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:35,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:35,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765522559] [2022-11-18 19:46:35,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:35,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:35,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:35,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:35,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:35,862 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) [2022-11-18 19:46:36,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:36,025 INFO L93 Difference]: Finished difference Result 747 states and 2561 transitions. [2022-11-18 19:46:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:36,025 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 [2022-11-18 19:46:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:36,031 INFO L225 Difference]: With dead ends: 747 [2022-11-18 19:46:36,031 INFO L226 Difference]: Without dead ends: 747 [2022-11-18 19:46:36,031 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 [2022-11-18 19:46:36,032 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:36,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 39 Unchecked, 0.2s Time] [2022-11-18 19:46:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-18 19:46:36,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2022-11-18 19:46:36,054 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) [2022-11-18 19:46:36,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 2561 transitions. [2022-11-18 19:46:36,058 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 2561 transitions. Word has length 7 [2022-11-18 19:46:36,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:36,059 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 2561 transitions. [2022-11-18 19:46:36,059 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) [2022-11-18 19:46:36,059 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 2561 transitions. [2022-11-18 19:46:36,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:46:36,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:36,060 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-11-18 19:46:36,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:36,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:36,279 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:36,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:36,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1881012923, now seen corresponding path program 1 times [2022-11-18 19:46:36,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:36,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517794076] [2022-11-18 19:46:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:36,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:36,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:36,281 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:36,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 19:46:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:36,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:46:36,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:36,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:36,577 INFO L321 Elim1Store]: treesize reduction 59, result has 36.6 percent of original size [2022-11-18 19:46:36,577 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 [2022-11-18 19:46:36,591 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 [2022-11-18 19:46:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:36,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:36,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:36,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517794076] [2022-11-18 19:46:36,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517794076] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:36,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:36,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:36,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206303137] [2022-11-18 19:46:36,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:36,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:36,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:36,755 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) [2022-11-18 19:46:36,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:36,904 INFO L93 Difference]: Finished difference Result 746 states and 2559 transitions. [2022-11-18 19:46:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:36,905 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 [2022-11-18 19:46:36,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:36,908 INFO L225 Difference]: With dead ends: 746 [2022-11-18 19:46:36,908 INFO L226 Difference]: Without dead ends: 746 [2022-11-18 19:46:36,909 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 [2022-11-18 19:46:36,909 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 [2022-11-18 19:46:36,909 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] [2022-11-18 19:46:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-18 19:46:36,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 746. [2022-11-18 19:46:36,930 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) [2022-11-18 19:46:36,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 2559 transitions. [2022-11-18 19:46:36,933 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 2559 transitions. Word has length 7 [2022-11-18 19:46:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:36,934 INFO L495 AbstractCegarLoop]: Abstraction has 746 states and 2559 transitions. [2022-11-18 19:46:36,934 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) [2022-11-18 19:46:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 2559 transitions. [2022-11-18 19:46:36,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:46:36,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:36,935 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-18 19:46:36,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:37,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:37,152 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:37,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:37,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1818141342, now seen corresponding path program 1 times [2022-11-18 19:46:37,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:37,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512412304] [2022-11-18 19:46:37,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:37,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:37,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:37,153 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:37,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 19:46:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:37,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:46:37,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:37,384 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 19:46:37,385 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 [2022-11-18 19:46:37,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:37,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:37,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:37,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512412304] [2022-11-18 19:46:37,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512412304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:37,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:37,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:37,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305353907] [2022-11-18 19:46:37,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:37,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:37,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:37,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:37,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:37,594 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) [2022-11-18 19:46:37,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:37,721 INFO L93 Difference]: Finished difference Result 747 states and 2565 transitions. [2022-11-18 19:46:37,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:37,721 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 [2022-11-18 19:46:37,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:37,726 INFO L225 Difference]: With dead ends: 747 [2022-11-18 19:46:37,727 INFO L226 Difference]: Without dead ends: 747 [2022-11-18 19:46:37,727 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 [2022-11-18 19:46:37,727 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 [2022-11-18 19:46:37,728 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] [2022-11-18 19:46:37,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-18 19:46:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 747. [2022-11-18 19:46:37,748 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) [2022-11-18 19:46:37,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 2565 transitions. [2022-11-18 19:46:37,752 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 2565 transitions. Word has length 8 [2022-11-18 19:46:37,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:37,752 INFO L495 AbstractCegarLoop]: Abstraction has 747 states and 2565 transitions. [2022-11-18 19:46:37,752 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) [2022-11-18 19:46:37,753 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 2565 transitions. [2022-11-18 19:46:37,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:46:37,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:37,753 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-18 19:46:37,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:37,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:37,965 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:37,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:37,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1818141455, now seen corresponding path program 1 times [2022-11-18 19:46:37,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:37,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821602627] [2022-11-18 19:46:37,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:37,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:37,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:37,968 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:37,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 19:46:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:38,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:46:38,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:38,168 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-18 19:46:38,169 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 [2022-11-18 19:46:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:38,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:38,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:38,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821602627] [2022-11-18 19:46:38,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821602627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:38,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:38,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:46:38,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91506998] [2022-11-18 19:46:38,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:38,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:46:38,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:38,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:46:38,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:46:38,217 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) [2022-11-18 19:46:38,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:38,420 INFO L93 Difference]: Finished difference Result 423 states and 1417 transitions. [2022-11-18 19:46:38,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:46:38,420 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 [2022-11-18 19:46:38,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:38,423 INFO L225 Difference]: With dead ends: 423 [2022-11-18 19:46:38,423 INFO L226 Difference]: Without dead ends: 423 [2022-11-18 19:46:38,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:38,424 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 [2022-11-18 19:46:38,424 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] [2022-11-18 19:46:38,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-18 19:46:38,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2022-11-18 19:46:38,437 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) [2022-11-18 19:46:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1417 transitions. [2022-11-18 19:46:38,439 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1417 transitions. Word has length 8 [2022-11-18 19:46:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:38,439 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 1417 transitions. [2022-11-18 19:46:38,440 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) [2022-11-18 19:46:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1417 transitions. [2022-11-18 19:46:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:46:38,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:38,440 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-18 19:46:38,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:38,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:38,652 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:38,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:38,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1818141456, now seen corresponding path program 1 times [2022-11-18 19:46:38,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:38,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687129955] [2022-11-18 19:46:38,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:38,653 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:38,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:38,654 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:38,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 19:46:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:38,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:46:38,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:38,908 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:46:38,909 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 [2022-11-18 19:46:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:38,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:38,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:38,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687129955] [2022-11-18 19:46:38,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687129955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:38,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:38,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:46:38,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840762757] [2022-11-18 19:46:38,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:38,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:38,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:38,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:38,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:38,980 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) [2022-11-18 19:46:39,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:39,401 INFO L93 Difference]: Finished difference Result 671 states and 2227 transitions. [2022-11-18 19:46:39,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:46:39,401 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 [2022-11-18 19:46:39,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:39,405 INFO L225 Difference]: With dead ends: 671 [2022-11-18 19:46:39,406 INFO L226 Difference]: Without dead ends: 671 [2022-11-18 19:46:39,406 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 [2022-11-18 19:46:39,406 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 112 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-11-18 19:46:39,407 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] [2022-11-18 19:46:39,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-11-18 19:46:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 505. [2022-11-18 19:46:39,421 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) [2022-11-18 19:46:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 1789 transitions. [2022-11-18 19:46:39,424 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 1789 transitions. Word has length 8 [2022-11-18 19:46:39,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:39,424 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 1789 transitions. [2022-11-18 19:46:39,425 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) [2022-11-18 19:46:39,425 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 1789 transitions. [2022-11-18 19:46:39,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:46:39,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:39,425 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-11-18 19:46:39,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:39,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:39,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:39,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:39,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1818141341, now seen corresponding path program 1 times [2022-11-18 19:46:39,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:39,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846687657] [2022-11-18 19:46:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:39,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:39,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:39,639 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:39,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 19:46:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:39,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:46:39,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:39,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:39,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:39,900 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-18 19:46:39,901 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 [2022-11-18 19:46:39,914 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 [2022-11-18 19:46:40,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:40,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:40,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:40,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846687657] [2022-11-18 19:46:40,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846687657] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:40,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:40,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:40,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482255337] [2022-11-18 19:46:40,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:40,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:40,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:40,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:40,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:40,077 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) [2022-11-18 19:46:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:40,209 INFO L93 Difference]: Finished difference Result 504 states and 1786 transitions. [2022-11-18 19:46:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:40,210 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 [2022-11-18 19:46:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:40,214 INFO L225 Difference]: With dead ends: 504 [2022-11-18 19:46:40,214 INFO L226 Difference]: Without dead ends: 504 [2022-11-18 19:46:40,214 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 [2022-11-18 19:46:40,215 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 [2022-11-18 19:46:40,215 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] [2022-11-18 19:46:40,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2022-11-18 19:46:40,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2022-11-18 19:46:40,240 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) [2022-11-18 19:46:40,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1786 transitions. [2022-11-18 19:46:40,243 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1786 transitions. Word has length 8 [2022-11-18 19:46:40,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:40,244 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 1786 transitions. [2022-11-18 19:46:40,244 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) [2022-11-18 19:46:40,244 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1786 transitions. [2022-11-18 19:46:40,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:46:40,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:40,246 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:40,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:40,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:40,459 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:40,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:40,460 INFO L85 PathProgramCache]: Analyzing trace with hash 527849454, now seen corresponding path program 1 times [2022-11-18 19:46:40,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:40,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1638639687] [2022-11-18 19:46:40,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:40,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:40,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:40,462 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:40,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-18 19:46:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:40,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:46:40,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:40,698 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2022-11-18 19:46:40,698 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 [2022-11-18 19:46:40,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:40,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:40,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:40,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1638639687] [2022-11-18 19:46:40,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1638639687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:40,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:40,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:40,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442887984] [2022-11-18 19:46:40,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:40,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:40,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:40,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:40,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:40,741 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) [2022-11-18 19:46:40,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:40,923 INFO L93 Difference]: Finished difference Result 480 states and 1714 transitions. [2022-11-18 19:46:40,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:40,924 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 [2022-11-18 19:46:40,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:40,927 INFO L225 Difference]: With dead ends: 480 [2022-11-18 19:46:40,927 INFO L226 Difference]: Without dead ends: 480 [2022-11-18 19:46:40,928 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 [2022-11-18 19:46:40,928 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 [2022-11-18 19:46:40,929 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] [2022-11-18 19:46:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2022-11-18 19:46:40,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2022-11-18 19:46:40,957 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) [2022-11-18 19:46:40,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1714 transitions. [2022-11-18 19:46:40,960 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1714 transitions. Word has length 9 [2022-11-18 19:46:40,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:40,960 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 1714 transitions. [2022-11-18 19:46:40,961 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) [2022-11-18 19:46:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1714 transitions. [2022-11-18 19:46:40,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:46:40,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:40,962 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:40,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:41,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:41,174 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:41,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:41,175 INFO L85 PathProgramCache]: Analyzing trace with hash 527849455, now seen corresponding path program 1 times [2022-11-18 19:46:41,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:41,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [810399397] [2022-11-18 19:46:41,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:41,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:41,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:41,177 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:41,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-18 19:46:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:41,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:46:41,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:41,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:41,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:41,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:41,422 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-11-18 19:46:41,422 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 [2022-11-18 19:46:41,460 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 [2022-11-18 19:46:41,557 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:41,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:41,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:41,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [810399397] [2022-11-18 19:46:41,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [810399397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:41,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:41,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:41,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313594108] [2022-11-18 19:46:41,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:41,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:41,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:41,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:41,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:41,562 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) [2022-11-18 19:46:41,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:41,732 INFO L93 Difference]: Finished difference Result 456 states and 1642 transitions. [2022-11-18 19:46:41,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:41,733 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 [2022-11-18 19:46:41,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:41,735 INFO L225 Difference]: With dead ends: 456 [2022-11-18 19:46:41,736 INFO L226 Difference]: Without dead ends: 456 [2022-11-18 19:46:41,736 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 [2022-11-18 19:46:41,737 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-18 19:46:41,737 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] [2022-11-18 19:46:41,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-11-18 19:46:41,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2022-11-18 19:46:41,749 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) [2022-11-18 19:46:41,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 1642 transitions. [2022-11-18 19:46:41,752 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 1642 transitions. Word has length 9 [2022-11-18 19:46:41,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:41,752 INFO L495 AbstractCegarLoop]: Abstraction has 456 states and 1642 transitions. [2022-11-18 19:46:41,752 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) [2022-11-18 19:46:41,752 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 1642 transitions. [2022-11-18 19:46:41,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:46:41,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:41,753 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:41,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-18 19:46:41,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:41,965 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:41,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:41,965 INFO L85 PathProgramCache]: Analyzing trace with hash 527811711, now seen corresponding path program 1 times [2022-11-18 19:46:41,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:41,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439320708] [2022-11-18 19:46:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:41,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:41,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:41,967 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:41,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-18 19:46:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:42,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:46:42,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:42,192 INFO L321 Elim1Store]: treesize reduction 101, result has 20.5 percent of original size [2022-11-18 19:46:42,192 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 [2022-11-18 19:46:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:42,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:42,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:42,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439320708] [2022-11-18 19:46:42,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439320708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:42,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:42,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:42,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274031639] [2022-11-18 19:46:42,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:42,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:42,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:42,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:42,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:42,242 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) [2022-11-18 19:46:42,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:42,402 INFO L93 Difference]: Finished difference Result 437 states and 1588 transitions. [2022-11-18 19:46:42,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:42,402 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 [2022-11-18 19:46:42,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:42,405 INFO L225 Difference]: With dead ends: 437 [2022-11-18 19:46:42,405 INFO L226 Difference]: Without dead ends: 437 [2022-11-18 19:46:42,406 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 [2022-11-18 19:46:42,406 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 [2022-11-18 19:46:42,406 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] [2022-11-18 19:46:42,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-18 19:46:42,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2022-11-18 19:46:42,424 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) [2022-11-18 19:46:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 1588 transitions. [2022-11-18 19:46:42,426 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 1588 transitions. Word has length 9 [2022-11-18 19:46:42,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:42,427 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 1588 transitions. [2022-11-18 19:46:42,427 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) [2022-11-18 19:46:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 1588 transitions. [2022-11-18 19:46:42,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:46:42,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:42,428 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:42,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:42,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:42,640 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:42,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:42,641 INFO L85 PathProgramCache]: Analyzing trace with hash 527811825, now seen corresponding path program 1 times [2022-11-18 19:46:42,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:42,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988713981] [2022-11-18 19:46:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:42,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:42,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:42,642 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:42,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-18 19:46:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:42,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:46:42,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:42,895 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:46:42,895 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 [2022-11-18 19:46:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:42,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:43,261 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:43,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:43,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988713981] [2022-11-18 19:46:43,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988713981] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:43,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:46:43,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-18 19:46:43,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465189113] [2022-11-18 19:46:43,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:43,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:46:43,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:43,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:46:43,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:46:43,263 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) [2022-11-18 19:46:44,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:44,280 INFO L93 Difference]: Finished difference Result 986 states and 3349 transitions. [2022-11-18 19:46:44,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:46:44,281 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 [2022-11-18 19:46:44,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:44,286 INFO L225 Difference]: With dead ends: 986 [2022-11-18 19:46:44,286 INFO L226 Difference]: Without dead ends: 986 [2022-11-18 19:46:44,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:46:44,287 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 [2022-11-18 19:46:44,287 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] [2022-11-18 19:46:44,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2022-11-18 19:46:44,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 587. [2022-11-18 19:46:44,309 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) [2022-11-18 19:46:44,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 2278 transitions. [2022-11-18 19:46:44,312 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 2278 transitions. Word has length 9 [2022-11-18 19:46:44,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:44,312 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 2278 transitions. [2022-11-18 19:46:44,312 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) [2022-11-18 19:46:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 2278 transitions. [2022-11-18 19:46:44,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:46:44,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:44,313 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:44,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:44,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:44,526 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:44,526 INFO L85 PathProgramCache]: Analyzing trace with hash 527811710, now seen corresponding path program 1 times [2022-11-18 19:46:44,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:44,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851490526] [2022-11-18 19:46:44,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:44,527 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:44,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:44,528 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:44,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-18 19:46:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:44,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:46:44,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:44,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:44,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:44,822 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-18 19:46:44,826 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 [2022-11-18 19:46:44,837 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 [2022-11-18 19:46:44,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:44,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:44,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:44,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851490526] [2022-11-18 19:46:44,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851490526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:44,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:44,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:44,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842933038] [2022-11-18 19:46:44,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:44,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:44,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:44,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:44,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:44,967 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) [2022-11-18 19:46:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:45,068 INFO L93 Difference]: Finished difference Result 584 states and 2268 transitions. [2022-11-18 19:46:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:45,068 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 [2022-11-18 19:46:45,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:45,072 INFO L225 Difference]: With dead ends: 584 [2022-11-18 19:46:45,072 INFO L226 Difference]: Without dead ends: 584 [2022-11-18 19:46:45,072 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 [2022-11-18 19:46:45,073 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 [2022-11-18 19:46:45,073 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] [2022-11-18 19:46:45,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-11-18 19:46:45,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2022-11-18 19:46:45,090 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) [2022-11-18 19:46:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 2268 transitions. [2022-11-18 19:46:45,093 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 2268 transitions. Word has length 9 [2022-11-18 19:46:45,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:45,093 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 2268 transitions. [2022-11-18 19:46:45,093 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) [2022-11-18 19:46:45,094 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 2268 transitions. [2022-11-18 19:46:45,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-18 19:46:45,094 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:45,094 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:45,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:45,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:45,307 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:45,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:45,307 INFO L85 PathProgramCache]: Analyzing trace with hash 527812578, now seen corresponding path program 1 times [2022-11-18 19:46:45,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:45,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663301600] [2022-11-18 19:46:45,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:45,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:45,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:45,309 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:45,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-18 19:46:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:45,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:46:45,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:45,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:45,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:45,568 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-18 19:46:45,568 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 [2022-11-18 19:46:45,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-11-18 19:46:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:45,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:45,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:45,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663301600] [2022-11-18 19:46:45,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663301600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:45,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:45,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:45,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230527798] [2022-11-18 19:46:45,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:45,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:45,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:45,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:45,734 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) [2022-11-18 19:46:45,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:45,851 INFO L93 Difference]: Finished difference Result 585 states and 2269 transitions. [2022-11-18 19:46:45,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:45,852 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 [2022-11-18 19:46:45,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:45,855 INFO L225 Difference]: With dead ends: 585 [2022-11-18 19:46:45,855 INFO L226 Difference]: Without dead ends: 585 [2022-11-18 19:46:45,855 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 [2022-11-18 19:46:45,856 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 [2022-11-18 19:46:45,856 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] [2022-11-18 19:46:45,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-18 19:46:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-11-18 19:46:45,872 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) [2022-11-18 19:46:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 2269 transitions. [2022-11-18 19:46:45,875 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 2269 transitions. Word has length 9 [2022-11-18 19:46:45,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:45,875 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 2269 transitions. [2022-11-18 19:46:45,875 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) [2022-11-18 19:46:45,876 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 2269 transitions. [2022-11-18 19:46:45,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:46:45,876 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:45,876 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:45,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:46,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:46,089 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:46,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:46,089 INFO L85 PathProgramCache]: Analyzing trace with hash -816535751, now seen corresponding path program 1 times [2022-11-18 19:46:46,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:46,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177198187] [2022-11-18 19:46:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:46,090 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:46,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:46,091 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:46,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-18 19:46:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:46,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:46:46,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:46,325 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:46:46,325 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 [2022-11-18 19:46:46,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:46,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:46,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:46,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177198187] [2022-11-18 19:46:46,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1177198187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:46,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:46,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:46:46,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610440438] [2022-11-18 19:46:46,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:46,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:46,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:46,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:46,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:46,407 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) [2022-11-18 19:46:46,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:46,725 INFO L93 Difference]: Finished difference Result 871 states and 3391 transitions. [2022-11-18 19:46:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:46:46,726 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 [2022-11-18 19:46:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:46,730 INFO L225 Difference]: With dead ends: 871 [2022-11-18 19:46:46,730 INFO L226 Difference]: Without dead ends: 871 [2022-11-18 19:46:46,731 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 [2022-11-18 19:46:46,731 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2022-11-18 19:46:46,732 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] [2022-11-18 19:46:46,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-18 19:46:46,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 723. [2022-11-18 19:46:46,753 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) [2022-11-18 19:46:46,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 2959 transitions. [2022-11-18 19:46:46,756 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 2959 transitions. Word has length 10 [2022-11-18 19:46:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:46,757 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 2959 transitions. [2022-11-18 19:46:46,757 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) [2022-11-18 19:46:46,757 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 2959 transitions. [2022-11-18 19:46:46,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 19:46:46,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:46,758 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:46,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:46,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:46,969 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:46,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:46,970 INFO L85 PathProgramCache]: Analyzing trace with hash -817700319, now seen corresponding path program 1 times [2022-11-18 19:46:46,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:46,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479610872] [2022-11-18 19:46:46,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:46,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:46,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:46,971 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:46,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-18 19:46:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:47,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:46:47,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:47,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:47,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:46:47,251 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2022-11-18 19:46:47,251 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 [2022-11-18 19:46:47,269 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 [2022-11-18 19:46:47,419 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:46:47,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:47,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:47,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479610872] [2022-11-18 19:46:47,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479610872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:47,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:47,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:46:47,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215329864] [2022-11-18 19:46:47,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:47,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:47,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:47,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:47,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:47,422 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) [2022-11-18 19:46:47,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:47,540 INFO L93 Difference]: Finished difference Result 722 states and 2958 transitions. [2022-11-18 19:46:47,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:47,540 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 [2022-11-18 19:46:47,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:47,544 INFO L225 Difference]: With dead ends: 722 [2022-11-18 19:46:47,544 INFO L226 Difference]: Without dead ends: 722 [2022-11-18 19:46:47,544 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 [2022-11-18 19:46:47,545 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 [2022-11-18 19:46:47,545 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] [2022-11-18 19:46:47,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-18 19:46:47,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 721. [2022-11-18 19:46:47,564 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) [2022-11-18 19:46:47,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 2957 transitions. [2022-11-18 19:46:47,568 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 2957 transitions. Word has length 10 [2022-11-18 19:46:47,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:47,568 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 2957 transitions. [2022-11-18 19:46:47,568 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) [2022-11-18 19:46:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 2957 transitions. [2022-11-18 19:46:47,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:46:47,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:47,569 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:47,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-18 19:46:47,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:47,781 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:47,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:47,782 INFO L85 PathProgramCache]: Analyzing trace with hash 457218423, now seen corresponding path program 1 times [2022-11-18 19:46:47,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:47,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491846840] [2022-11-18 19:46:47,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:47,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:47,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:47,783 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:47,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-18 19:46:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:47,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:46:47,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:47,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:47,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:47,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491846840] [2022-11-18 19:46:47,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491846840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:47,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:47,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:46:47,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524399295] [2022-11-18 19:46:47,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:47,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:47,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:47,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:47,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:47,935 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) [2022-11-18 19:46:48,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:48,078 INFO L93 Difference]: Finished difference Result 581 states and 2309 transitions. [2022-11-18 19:46:48,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:48,079 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 [2022-11-18 19:46:48,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:48,081 INFO L225 Difference]: With dead ends: 581 [2022-11-18 19:46:48,081 INFO L226 Difference]: Without dead ends: 581 [2022-11-18 19:46:48,081 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 [2022-11-18 19:46:48,082 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 [2022-11-18 19:46:48,082 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] [2022-11-18 19:46:48,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-11-18 19:46:48,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2022-11-18 19:46:48,098 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) [2022-11-18 19:46:48,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 2309 transitions. [2022-11-18 19:46:48,101 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 2309 transitions. Word has length 11 [2022-11-18 19:46:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:48,101 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 2309 transitions. [2022-11-18 19:46:48,102 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) [2022-11-18 19:46:48,102 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 2309 transitions. [2022-11-18 19:46:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:46:48,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:48,103 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:48,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-18 19:46:48,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:48,314 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:48,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:48,315 INFO L85 PathProgramCache]: Analyzing trace with hash 457218424, now seen corresponding path program 1 times [2022-11-18 19:46:48,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:48,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665639658] [2022-11-18 19:46:48,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:48,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:48,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:48,317 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:48,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-18 19:46:48,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:48,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:46:48,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:48,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:48,551 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:48,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665639658] [2022-11-18 19:46:48,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665639658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:48,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:48,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:46:48,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768699319] [2022-11-18 19:46:48,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:48,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:46:48,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:48,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:46:48,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:46:48,552 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) [2022-11-18 19:46:48,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:48,717 INFO L93 Difference]: Finished difference Result 441 states and 1661 transitions. [2022-11-18 19:46:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:48,717 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 [2022-11-18 19:46:48,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:48,719 INFO L225 Difference]: With dead ends: 441 [2022-11-18 19:46:48,719 INFO L226 Difference]: Without dead ends: 441 [2022-11-18 19:46:48,719 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 [2022-11-18 19:46:48,720 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 [2022-11-18 19:46:48,720 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] [2022-11-18 19:46:48,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-11-18 19:46:48,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-11-18 19:46:48,731 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) [2022-11-18 19:46:48,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1661 transitions. [2022-11-18 19:46:48,733 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1661 transitions. Word has length 11 [2022-11-18 19:46:48,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:48,733 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 1661 transitions. [2022-11-18 19:46:48,734 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) [2022-11-18 19:46:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1661 transitions. [2022-11-18 19:46:48,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:46:48,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:48,734 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:48,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-18 19:46:48,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:48,946 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:48,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:48,946 INFO L85 PathProgramCache]: Analyzing trace with hash 457198396, now seen corresponding path program 1 times [2022-11-18 19:46:48,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:48,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446515965] [2022-11-18 19:46:48,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:48,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:48,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:48,948 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:48,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-18 19:46:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:49,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:46:49,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:49,206 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:46:49,206 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 [2022-11-18 19:46:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:49,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:49,613 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:49,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:49,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446515965] [2022-11-18 19:46:49,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446515965] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:49,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:46:49,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-18 19:46:49,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167031362] [2022-11-18 19:46:49,614 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:49,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:46:49,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:46:49,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:46:49,615 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) [2022-11-18 19:46:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:50,513 INFO L93 Difference]: Finished difference Result 881 states and 3153 transitions. [2022-11-18 19:46:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:46:50,514 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 [2022-11-18 19:46:50,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:50,518 INFO L225 Difference]: With dead ends: 881 [2022-11-18 19:46:50,518 INFO L226 Difference]: Without dead ends: 881 [2022-11-18 19:46:50,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:46:50,519 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 [2022-11-18 19:46:50,519 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] [2022-11-18 19:46:50,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-11-18 19:46:50,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 605. [2022-11-18 19:46:50,537 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) [2022-11-18 19:46:50,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 2433 transitions. [2022-11-18 19:46:50,540 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 2433 transitions. Word has length 11 [2022-11-18 19:46:50,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:50,541 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 2433 transitions. [2022-11-18 19:46:50,541 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) [2022-11-18 19:46:50,541 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 2433 transitions. [2022-11-18 19:46:50,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-18 19:46:50,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:50,542 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-11-18 19:46:50,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:50,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:50,755 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:50,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:50,755 INFO L85 PathProgramCache]: Analyzing trace with hash 421072081, now seen corresponding path program 2 times [2022-11-18 19:46:50,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:50,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484599198] [2022-11-18 19:46:50,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:46:50,756 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 [2022-11-18 19:46:50,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:50,756 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:50,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-18 19:46:50,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:46:50,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:50,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:46:50,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:50,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:50,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:51,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:51,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:51,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484599198] [2022-11-18 19:46:51,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484599198] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:51,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:46:51,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-18 19:46:51,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872042462] [2022-11-18 19:46:51,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:51,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:46:51,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:51,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:46:51,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:46:51,050 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) [2022-11-18 19:46:52,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:52,097 INFO L93 Difference]: Finished difference Result 1030 states and 3606 transitions. [2022-11-18 19:46:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:46:52,098 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 [2022-11-18 19:46:52,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:52,103 INFO L225 Difference]: With dead ends: 1030 [2022-11-18 19:46:52,104 INFO L226 Difference]: Without dead ends: 1030 [2022-11-18 19:46:52,104 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 [2022-11-18 19:46:52,105 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 231 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:52,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 0 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:46:52,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-18 19:46:52,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 532. [2022-11-18 19:46:52,128 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) [2022-11-18 19:46:52,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 2088 transitions. [2022-11-18 19:46:52,146 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 2088 transitions. Word has length 11 [2022-11-18 19:46:52,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:52,147 INFO L495 AbstractCegarLoop]: Abstraction has 532 states and 2088 transitions. [2022-11-18 19:46:52,147 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) [2022-11-18 19:46:52,147 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 2088 transitions. [2022-11-18 19:46:52,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-18 19:46:52,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:52,148 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:52,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:52,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:52,363 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:52,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1288869610, now seen corresponding path program 1 times [2022-11-18 19:46:52,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:52,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110175029] [2022-11-18 19:46:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:52,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:52,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:52,365 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:52,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-18 19:46:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:52,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:46:52,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:52,639 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:46:52,639 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 [2022-11-18 19:46:52,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:52,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:52,736 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:52,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110175029] [2022-11-18 19:46:52,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110175029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:52,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:52,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:46:52,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870348739] [2022-11-18 19:46:52,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:52,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:52,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:52,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:52,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:52,737 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) [2022-11-18 19:46:53,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:53,017 INFO L93 Difference]: Finished difference Result 748 states and 2958 transitions. [2022-11-18 19:46:53,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:46:53,017 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 [2022-11-18 19:46:53,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:53,021 INFO L225 Difference]: With dead ends: 748 [2022-11-18 19:46:53,021 INFO L226 Difference]: Without dead ends: 748 [2022-11-18 19:46:53,022 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 [2022-11-18 19:46:53,022 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:46:53,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 0 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:46:53,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-11-18 19:46:53,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 639. [2022-11-18 19:46:53,041 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) [2022-11-18 19:46:53,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 2629 transitions. [2022-11-18 19:46:53,045 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 2629 transitions. Word has length 12 [2022-11-18 19:46:53,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:53,045 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 2629 transitions. [2022-11-18 19:46:53,045 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) [2022-11-18 19:46:53,046 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 2629 transitions. [2022-11-18 19:46:53,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:46:53,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:53,047 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:53,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:53,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:53,259 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:53,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:53,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1300255266, now seen corresponding path program 1 times [2022-11-18 19:46:53,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:53,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1448274741] [2022-11-18 19:46:53,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:53,260 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:53,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:53,261 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:53,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-18 19:46:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:53,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:46:53,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:53,554 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:46:53,555 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 [2022-11-18 19:46:53,678 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:53,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:54,030 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:54,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:54,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1448274741] [2022-11-18 19:46:54,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1448274741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:54,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:46:54,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-11-18 19:46:54,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396060712] [2022-11-18 19:46:54,031 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:54,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:46:54,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:54,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:46:54,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:46:54,032 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) [2022-11-18 19:46:54,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:54,911 INFO L93 Difference]: Finished difference Result 1180 states and 4698 transitions. [2022-11-18 19:46:54,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:46:54,912 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 [2022-11-18 19:46:54,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:54,918 INFO L225 Difference]: With dead ends: 1180 [2022-11-18 19:46:54,918 INFO L226 Difference]: Without dead ends: 1180 [2022-11-18 19:46:54,918 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 [2022-11-18 19:46:54,919 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 [2022-11-18 19:46:54,919 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] [2022-11-18 19:46:54,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-11-18 19:46:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 853. [2022-11-18 19:46:54,948 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) [2022-11-18 19:46:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 3711 transitions. [2022-11-18 19:46:54,952 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 3711 transitions. Word has length 13 [2022-11-18 19:46:54,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:54,953 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 3711 transitions. [2022-11-18 19:46:54,953 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) [2022-11-18 19:46:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 3711 transitions. [2022-11-18 19:46:54,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:46:54,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:54,954 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:54,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:55,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:55,167 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:55,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:55,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1281087196, now seen corresponding path program 2 times [2022-11-18 19:46:55,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:55,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914562925] [2022-11-18 19:46:55,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:46:55,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:55,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:55,170 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:55,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-18 19:46:55,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:46:55,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:55,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:46:55,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:55,523 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:46:55,523 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 [2022-11-18 19:46:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:55,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:56,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:56,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914562925] [2022-11-18 19:46:56,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914562925] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:56,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:46:56,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2022-11-18 19:46:56,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087170832] [2022-11-18 19:46:56,204 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:56,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:46:56,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:56,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:46:56,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:46:56,205 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) [2022-11-18 19:46:57,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:57,375 INFO L93 Difference]: Finished difference Result 1135 states and 4291 transitions. [2022-11-18 19:46:57,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:57,376 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 [2022-11-18 19:46:57,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:57,381 INFO L225 Difference]: With dead ends: 1135 [2022-11-18 19:46:57,381 INFO L226 Difference]: Without dead ends: 1135 [2022-11-18 19:46:57,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:46:57,382 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 [2022-11-18 19:46:57,383 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] [2022-11-18 19:46:57,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2022-11-18 19:46:57,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 736. [2022-11-18 19:46:57,406 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) [2022-11-18 19:46:57,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 3124 transitions. [2022-11-18 19:46:57,426 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 3124 transitions. Word has length 13 [2022-11-18 19:46:57,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:57,427 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 3124 transitions. [2022-11-18 19:46:57,427 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) [2022-11-18 19:46:57,427 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 3124 transitions. [2022-11-18 19:46:57,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:46:57,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:57,430 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:57,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:57,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:57,643 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:57,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:57,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1826573369, now seen corresponding path program 1 times [2022-11-18 19:46:57,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:57,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150250982] [2022-11-18 19:46:57,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:57,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:57,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:57,646 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:57,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-18 19:46:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:57,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:46:57,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:57,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:57,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:57,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:57,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150250982] [2022-11-18 19:46:57,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150250982] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:57,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:57,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:46:57,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634443676] [2022-11-18 19:46:57,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:57,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:46:57,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:57,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:46:57,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:46:57,908 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) [2022-11-18 19:46:58,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:46:58,050 INFO L93 Difference]: Finished difference Result 694 states and 2966 transitions. [2022-11-18 19:46:58,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:58,051 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 [2022-11-18 19:46:58,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:46:58,053 INFO L225 Difference]: With dead ends: 694 [2022-11-18 19:46:58,053 INFO L226 Difference]: Without dead ends: 694 [2022-11-18 19:46:58,054 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 [2022-11-18 19:46:58,054 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 [2022-11-18 19:46:58,054 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] [2022-11-18 19:46:58,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-11-18 19:46:58,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2022-11-18 19:46:58,074 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) [2022-11-18 19:46:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2966 transitions. [2022-11-18 19:46:58,077 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2966 transitions. Word has length 15 [2022-11-18 19:46:58,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:46:58,078 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 2966 transitions. [2022-11-18 19:46:58,078 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) [2022-11-18 19:46:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2966 transitions. [2022-11-18 19:46:58,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:46:58,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:46:58,080 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:58,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:58,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:58,292 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:46:58,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:58,293 INFO L85 PathProgramCache]: Analyzing trace with hash -290075870, now seen corresponding path program 2 times [2022-11-18 19:46:58,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:46:58,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831109926] [2022-11-18 19:46:58,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:46:58,293 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:46:58,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:46:58,294 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:46:58,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-18 19:46:58,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:46:58,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:46:58,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-18 19:46:58,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:58,623 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-18 19:46:58,624 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 [2022-11-18 19:46:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:58,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:46:59,228 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:46:59,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831109926] [2022-11-18 19:46:59,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831109926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:59,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:46:59,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2022-11-18 19:46:59,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358979941] [2022-11-18 19:46:59,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:59,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:46:59,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:46:59,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:46:59,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:46:59,230 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) [2022-11-18 19:47:00,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:00,352 INFO L93 Difference]: Finished difference Result 872 states and 3316 transitions. [2022-11-18 19:47:00,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:47:00,352 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 [2022-11-18 19:47:00,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:00,356 INFO L225 Difference]: With dead ends: 872 [2022-11-18 19:47:00,356 INFO L226 Difference]: Without dead ends: 872 [2022-11-18 19:47:00,356 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 [2022-11-18 19:47:00,357 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 [2022-11-18 19:47:00,357 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] [2022-11-18 19:47:00,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-18 19:47:00,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 608. [2022-11-18 19:47:00,376 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) [2022-11-18 19:47:00,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2536 transitions. [2022-11-18 19:47:00,379 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2536 transitions. Word has length 15 [2022-11-18 19:47:00,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:00,380 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 2536 transitions. [2022-11-18 19:47:00,380 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) [2022-11-18 19:47:00,380 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2536 transitions. [2022-11-18 19:47:00,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:47:00,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:00,383 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] [2022-11-18 19:47:00,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:00,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:47:00,596 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:47:00,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:00,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1980707455, now seen corresponding path program 1 times [2022-11-18 19:47:00,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:47:00,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286710689] [2022-11-18 19:47:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:00,597 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:47:00,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:47:00,599 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:47:00,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-18 19:47:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:00,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:47:00,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:47:01,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:47:01,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:47:01,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286710689] [2022-11-18 19:47:01,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286710689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:01,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:01,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:47:01,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652989394] [2022-11-18 19:47:01,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:01,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:47:01,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:47:01,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:47:01,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:47:01,063 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) [2022-11-18 19:47:01,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:01,464 INFO L93 Difference]: Finished difference Result 779 states and 3087 transitions. [2022-11-18 19:47:01,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:47:01,465 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 [2022-11-18 19:47:01,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:01,468 INFO L225 Difference]: With dead ends: 779 [2022-11-18 19:47:01,469 INFO L226 Difference]: Without dead ends: 608 [2022-11-18 19:47:01,469 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 [2022-11-18 19:47:01,470 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:01,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:47:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-18 19:47:01,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2022-11-18 19:47:01,487 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) [2022-11-18 19:47:01,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2450 transitions. [2022-11-18 19:47:01,490 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2450 transitions. Word has length 23 [2022-11-18 19:47:01,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:01,491 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 2450 transitions. [2022-11-18 19:47:01,491 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) [2022-11-18 19:47:01,491 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2450 transitions. [2022-11-18 19:47:01,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 19:47:01,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:01,494 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] [2022-11-18 19:47:01,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:01,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:47:01,707 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:47:01,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:01,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1277639612, now seen corresponding path program 1 times [2022-11-18 19:47:01,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:47:01,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194955140] [2022-11-18 19:47:01,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:01,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:47:01,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:47:01,710 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:47:01,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-18 19:47:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:01,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:47:01,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:02,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:47:02,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:47:02,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:47:02,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194955140] [2022-11-18 19:47:02,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194955140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:47:02,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:47:02,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:47:02,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665062430] [2022-11-18 19:47:02,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:47:02,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:47:02,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:47:02,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:47:02,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:47:02,145 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) [2022-11-18 19:47:02,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:47:02,572 INFO L93 Difference]: Finished difference Result 717 states and 2749 transitions. [2022-11-18 19:47:02,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:47:02,573 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 [2022-11-18 19:47:02,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:47:02,576 INFO L225 Difference]: With dead ends: 717 [2022-11-18 19:47:02,576 INFO L226 Difference]: Without dead ends: 608 [2022-11-18 19:47:02,576 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 [2022-11-18 19:47:02,577 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:47:02,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:47:02,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-18 19:47:02,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2022-11-18 19:47:02,592 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) [2022-11-18 19:47:02,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2354 transitions. [2022-11-18 19:47:02,595 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2354 transitions. Word has length 24 [2022-11-18 19:47:02,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:47:02,596 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 2354 transitions. [2022-11-18 19:47:02,596 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) [2022-11-18 19:47:02,596 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2354 transitions. [2022-11-18 19:47:02,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:47:02,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:47:02,598 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] [2022-11-18 19:47:02,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:02,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:47:02,811 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:47:02,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:02,811 INFO L85 PathProgramCache]: Analyzing trace with hash 252603003, now seen corresponding path program 1 times [2022-11-18 19:47:02,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:47:02,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571876151] [2022-11-18 19:47:02,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:02,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:47:02,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:47:02,813 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:47:02,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-18 19:47:03,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:03,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:47:03,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:03,725 INFO L321 Elim1Store]: treesize reduction 148, result has 8.1 percent of original size [2022-11-18 19:47:03,726 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 [2022-11-18 19:47:15,247 WARN L233 SmtUtils]: Spent 7.01s on a formula simplification. DAG size of input: 37 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:47:15,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:47:15,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:18,139 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-18 19:47:18,140 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 [2022-11-18 19:48:24,882 WARN L233 SmtUtils]: Spent 1.08m on a formula simplification. DAG size of input: 212 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:48:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:48:24,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:48:24,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571876151] [2022-11-18 19:48:24,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571876151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:48:24,890 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:48:24,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 19:48:24,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235441176] [2022-11-18 19:48:24,890 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:48:24,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:48:24,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:48:24,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:48:24,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:48:24,892 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) [2022-11-18 19:48:35,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:48:35,029 INFO L93 Difference]: Finished difference Result 1895 states and 6724 transitions. [2022-11-18 19:48:35,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:48:35,030 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 [2022-11-18 19:48:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:48:35,034 INFO L225 Difference]: With dead ends: 1895 [2022-11-18 19:48:35,034 INFO L226 Difference]: Without dead ends: 1661 [2022-11-18 19:48:35,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 83.3s TimeCoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:48:35,035 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 179 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s 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, 3.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:48:35,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 0 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 558 Invalid, 0 Unknown, 510 Unchecked, 3.8s Time] [2022-11-18 19:48:35,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2022-11-18 19:48:35,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 857. [2022-11-18 19:48:35,065 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) [2022-11-18 19:48:35,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 3284 transitions. [2022-11-18 19:48:35,069 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 3284 transitions. Word has length 25 [2022-11-18 19:48:35,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:48:35,069 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 3284 transitions. [2022-11-18 19:48:35,069 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) [2022-11-18 19:48:35,070 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 3284 transitions. [2022-11-18 19:48:35,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:48:35,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:48:35,073 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] [2022-11-18 19:48:35,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:35,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:35,286 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:48:35,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:35,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1107909657, now seen corresponding path program 2 times [2022-11-18 19:48:35,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:48:35,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283581082] [2022-11-18 19:48:35,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:48:35,287 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:48:35,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:48:35,288 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:48:35,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-18 19:48:35,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:48:35,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:48:35,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:48:35,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:36,311 INFO L321 Elim1Store]: treesize reduction 148, result has 8.1 percent of original size [2022-11-18 19:48:36,311 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 [2022-11-18 19:48:47,920 WARN L233 SmtUtils]: Spent 11.09s on a formula simplification. DAG size of input: 63 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:48:58,522 WARN L233 SmtUtils]: Spent 9.36s on a formula simplification. DAG size of input: 72 DAG size of output: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:48:59,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:48:59,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:02,808 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-18 19:49:02,808 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 [2022-11-18 19:50:01,019 WARN L233 SmtUtils]: Spent 56.31s on a formula simplification. DAG size of input: 196 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:50:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:50:01,025 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:50:01,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283581082] [2022-11-18 19:50:01,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283581082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:50:01,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:50:01,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 19:50:01,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937439109] [2022-11-18 19:50:01,026 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:50:01,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:50:01,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:50:01,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:50:01,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:50:01,027 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) [2022-11-18 19:50:05,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:50:14,899 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification that was a NOOP. DAG size: 103 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:50:18,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:50:18,503 INFO L93 Difference]: Finished difference Result 1798 states and 6683 transitions. [2022-11-18 19:50:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:50:18,505 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 [2022-11-18 19:50:18,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:50:18,511 INFO L225 Difference]: With dead ends: 1798 [2022-11-18 19:50:18,511 INFO L226 Difference]: Without dead ends: 1786 [2022-11-18 19:50:18,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 89.8s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:50:18,512 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s 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, 6.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:50:18,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 1240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 529 Invalid, 1 Unknown, 697 Unchecked, 6.6s Time] [2022-11-18 19:50:18,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2022-11-18 19:50:18,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 921. [2022-11-18 19:50:18,554 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) [2022-11-18 19:50:18,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 3606 transitions. [2022-11-18 19:50:18,558 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 3606 transitions. Word has length 25 [2022-11-18 19:50:18,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:50:18,558 INFO L495 AbstractCegarLoop]: Abstraction has 921 states and 3606 transitions. [2022-11-18 19:50:18,559 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) [2022-11-18 19:50:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 3606 transitions. [2022-11-18 19:50:18,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:50:18,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:50:18,563 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] [2022-11-18 19:50:18,577 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:18,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:18,777 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:50:18,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:18,777 INFO L85 PathProgramCache]: Analyzing trace with hash 298953141, now seen corresponding path program 3 times [2022-11-18 19:50:18,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:50:18,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574413411] [2022-11-18 19:50:18,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:50:18,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:50:18,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:50:18,779 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:50:18,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-18 19:50:19,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 19:50:19,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:50:19,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-18 19:50:19,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:20,142 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:50:20,142 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 [2022-11-18 19:50:32,390 WARN L233 SmtUtils]: Spent 11.55s on a formula simplification. DAG size of input: 68 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:50:41,582 WARN L233 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 42 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:50:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:50:42,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:50:46,224 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-18 19:50:46,224 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 [2022-11-18 19:51:43,343 WARN L233 SmtUtils]: Spent 54.87s on a formula simplification. DAG size of input: 210 DAG size of output: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:51:43,349 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:51:43,349 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:51:43,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574413411] [2022-11-18 19:51:43,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574413411] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:51:43,350 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:51:43,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2022-11-18 19:51:43,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736588280] [2022-11-18 19:51:43,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:51:43,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:51:43,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:51:43,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:51:43,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:51:43,351 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) [2022-11-18 19:51:54,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:51:54,851 INFO L93 Difference]: Finished difference Result 1644 states and 6165 transitions. [2022-11-18 19:51:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:51:54,852 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 [2022-11-18 19:51:54,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:51:54,857 INFO L225 Difference]: With dead ends: 1644 [2022-11-18 19:51:54,858 INFO L226 Difference]: Without dead ends: 1625 [2022-11-18 19:51:54,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 85.9s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:51:54,859 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 102 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s 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, 2.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:51:54,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 0 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 397 Invalid, 0 Unknown, 194 Unchecked, 2.8s Time] [2022-11-18 19:51:54,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2022-11-18 19:51:54,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 965. [2022-11-18 19:51:54,890 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) [2022-11-18 19:51:54,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 3746 transitions. [2022-11-18 19:51:54,894 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 3746 transitions. Word has length 25 [2022-11-18 19:51:54,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:51:54,895 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 3746 transitions. [2022-11-18 19:51:54,895 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) [2022-11-18 19:51:54,895 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 3746 transitions. [2022-11-18 19:51:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:51:54,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:51:54,899 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] [2022-11-18 19:51:54,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-18 19:51:55,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:51:55,114 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:51:55,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:51:55,114 INFO L85 PathProgramCache]: Analyzing trace with hash 757663163, now seen corresponding path program 4 times [2022-11-18 19:51:55,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:51:55,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386522508] [2022-11-18 19:51:55,115 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:51:55,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:51:55,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:51:55,117 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:51:55,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-18 19:51:55,388 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:51:55,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:51:55,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:51:55,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:51:56,274 INFO L321 Elim1Store]: treesize reduction 148, result has 8.1 percent of original size [2022-11-18 19:51:56,275 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 [2022-11-18 19:52:08,610 WARN L233 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 65 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:52:09,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:52:09,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:52:12,689 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-18 19:52:12,689 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 [2022-11-18 19:53:14,522 WARN L233 SmtUtils]: Spent 1.00m on a formula simplification. DAG size of input: 181 DAG size of output: 67 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:53:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:53:14,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:14,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386522508] [2022-11-18 19:53:14,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386522508] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:14,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:14,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 19:53:14,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410741352] [2022-11-18 19:53:14,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:14,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:53:14,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:14,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:53:14,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:53:14,529 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) [2022-11-18 19:53:19,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:53:29,908 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 125 DAG size of output: 109 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:53:35,888 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 93 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:53:37,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:53:37,443 INFO L93 Difference]: Finished difference Result 2129 states and 7806 transitions. [2022-11-18 19:53:37,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:53:37,444 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 [2022-11-18 19:53:37,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:53:37,449 INFO L225 Difference]: With dead ends: 2129 [2022-11-18 19:53:37,449 INFO L226 Difference]: Without dead ends: 2001 [2022-11-18 19:53:37,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 90.5s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:53:37,449 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, 5.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:53:37,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 0 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 441 Invalid, 1 Unknown, 518 Unchecked, 5.5s Time] [2022-11-18 19:53:37,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2022-11-18 19:53:37,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1013. [2022-11-18 19:53:37,478 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) [2022-11-18 19:53:37,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 3968 transitions. [2022-11-18 19:53:37,483 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 3968 transitions. Word has length 25 [2022-11-18 19:53:37,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:53:37,483 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 3968 transitions. [2022-11-18 19:53:37,483 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) [2022-11-18 19:53:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 3968 transitions. [2022-11-18 19:53:37,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:53:37,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:53:37,487 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] [2022-11-18 19:53:37,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-18 19:53:37,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:37,700 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:53:37,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:53:37,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1251594969, now seen corresponding path program 5 times [2022-11-18 19:53:37,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:53:37,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917890786] [2022-11-18 19:53:37,701 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 19:53:37,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:53:37,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:53:37,702 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:53:37,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-18 19:53:37,991 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 19:53:37,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:53:38,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 19:53:38,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:53:38,995 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:53:38,996 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 [2022-11-18 19:53:50,711 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:53:50,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:53:54,994 INFO L321 Elim1Store]: treesize reduction 168, result has 2.9 percent of original size [2022-11-18 19:53:54,994 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 [2022-11-18 19:53:55,323 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:53:55,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:53:55,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917890786] [2022-11-18 19:53:55,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917890786] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:53:55,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:53:55,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 19 [2022-11-18 19:53:55,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901865656] [2022-11-18 19:53:55,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:53:55,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:53:55,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:53:55,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:53:55,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:53:55,325 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) [2022-11-18 19:54:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:54:49,753 INFO L93 Difference]: Finished difference Result 2771 states and 10014 transitions. [2022-11-18 19:54:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-18 19:54:49,755 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 [2022-11-18 19:54:49,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:54:49,763 INFO L225 Difference]: With dead ends: 2771 [2022-11-18 19:54:49,763 INFO L226 Difference]: Without dead ends: 2754 [2022-11-18 19:54:49,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1335 ImplicationChecksByTransitivity, 55.8s TimeCoverageRelationStatistics Valid=933, Invalid=4179, Unknown=0, NotChecked=0, Total=5112 [2022-11-18 19:54:49,765 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 344 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s 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, 11.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:54:49,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 0 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1088 Invalid, 0 Unknown, 467 Unchecked, 11.0s Time] [2022-11-18 19:54:49,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2022-11-18 19:54:49,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 1026. [2022-11-18 19:54:49,810 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) [2022-11-18 19:54:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 4038 transitions. [2022-11-18 19:54:49,815 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 4038 transitions. Word has length 25 [2022-11-18 19:54:49,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:54:49,816 INFO L495 AbstractCegarLoop]: Abstraction has 1026 states and 4038 transitions. [2022-11-18 19:54:49,816 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) [2022-11-18 19:54:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 4038 transitions. [2022-11-18 19:54:49,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:54:49,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:54:49,819 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] [2022-11-18 19:54:49,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-18 19:54:50,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:54:50,035 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:54:50,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:54:50,035 INFO L85 PathProgramCache]: Analyzing trace with hash -894489433, now seen corresponding path program 6 times [2022-11-18 19:54:50,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:54:50,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1390084583] [2022-11-18 19:54:50,036 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 19:54:50,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:54:50,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:54:50,037 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:54:50,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-18 19:54:50,495 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 19:54:50,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:54:50,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:54:50,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:54:51,812 INFO L321 Elim1Store]: treesize reduction 148, result has 8.1 percent of original size [2022-11-18 19:54:51,812 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 [2022-11-18 19:54:58,981 WARN L233 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 67 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:55:06,248 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:55:13,182 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:55:17,851 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:55:17,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:22,296 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-18 19:55:22,297 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 [2022-11-18 19:57:54,105 WARN L233 SmtUtils]: Spent 2.42m on a formula simplification. DAG size of input: 222 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:57:54,110 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:57:54,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:54,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1390084583] [2022-11-18 19:57:54,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1390084583] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:54,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:54,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-11-18 19:57:54,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432086052] [2022-11-18 19:57:54,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:54,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:57:54,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:54,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:57:54,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:57:54,112 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) [2022-11-18 19:58:04,163 WARN L233 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:58:11,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:11,786 INFO L93 Difference]: Finished difference Result 1665 states and 6415 transitions. [2022-11-18 19:58:11,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:58:11,788 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 [2022-11-18 19:58:11,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:11,795 INFO L225 Difference]: With dead ends: 1665 [2022-11-18 19:58:11,795 INFO L226 Difference]: Without dead ends: 1662 [2022-11-18 19:58:11,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 184.4s TimeCoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:58:11,796 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 148 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s 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, 4.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:11,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 0 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 464 Invalid, 0 Unknown, 369 Unchecked, 4.6s Time] [2022-11-18 19:58:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1662 states. [2022-11-18 19:58:11,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1027. [2022-11-18 19:58:11,825 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) [2022-11-18 19:58:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 4041 transitions. [2022-11-18 19:58:11,830 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 4041 transitions. Word has length 25 [2022-11-18 19:58:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:11,830 INFO L495 AbstractCegarLoop]: Abstraction has 1027 states and 4041 transitions. [2022-11-18 19:58:11,831 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) [2022-11-18 19:58:11,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 4041 transitions. [2022-11-18 19:58:11,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:58:11,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:11,851 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] [2022-11-18 19:58:11,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:12,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:12,065 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:58:12,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:12,065 INFO L85 PathProgramCache]: Analyzing trace with hash -446607745, now seen corresponding path program 7 times [2022-11-18 19:58:12,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:12,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518322273] [2022-11-18 19:58:12,066 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 19:58:12,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:12,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:12,067 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:58:12,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-18 19:58:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:12,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:58:12,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:13,014 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:13,015 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 [2022-11-18 19:58:26,585 WARN L233 SmtUtils]: Spent 8.20s on a formula simplification. DAG size of input: 39 DAG size of output: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:58:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:58:27,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:29,993 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-18 19:58:29,994 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 [2022-11-18 19:59:33,652 WARN L233 SmtUtils]: Spent 1.02m on a formula simplification. DAG size of input: 231 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 19:59:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 19:59:33,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:59:33,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518322273] [2022-11-18 19:59:33,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518322273] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:33,657 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:33,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 19:59:33,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328182452] [2022-11-18 19:59:33,658 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:33,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:59:33,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:59:33,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:59:33,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:59:33,659 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) [2022-11-18 19:59:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:42,884 INFO L93 Difference]: Finished difference Result 2024 states and 7507 transitions. [2022-11-18 19:59:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:59:42,885 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 [2022-11-18 19:59:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:42,891 INFO L225 Difference]: With dead ends: 2024 [2022-11-18 19:59:42,891 INFO L226 Difference]: Without dead ends: 1925 [2022-11-18 19:59:42,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 82.0s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:59:42,892 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 121 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:42,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 0 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 455 Invalid, 0 Unknown, 393 Unchecked, 3.3s Time] [2022-11-18 19:59:42,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2022-11-18 19:59:42,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 975. [2022-11-18 19:59:42,929 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) [2022-11-18 19:59:42,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 3865 transitions. [2022-11-18 19:59:42,933 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 3865 transitions. Word has length 25 [2022-11-18 19:59:42,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:42,933 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 3865 transitions. [2022-11-18 19:59:42,933 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) [2022-11-18 19:59:42,934 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 3865 transitions. [2022-11-18 19:59:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:59:42,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:42,937 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] [2022-11-18 19:59:42,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:43,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:43,150 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2022-11-18 19:59:43,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:43,151 INFO L85 PathProgramCache]: Analyzing trace with hash -144639755, now seen corresponding path program 8 times [2022-11-18 19:59:43,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:59:43,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720910292] [2022-11-18 19:59:43,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:59:43,151 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:43,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:59:43,152 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:59:43,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d47f10e8-4038-4b28-8cff-d8b0cf3107ec/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-18 19:59:43,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:59:43,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:43,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:59:43,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:44,973 INFO L321 Elim1Store]: treesize reduction 148, result has 8.1 percent of original size [2022-11-18 19:59:44,973 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 [2022-11-18 20:00:01,007 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:00:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:00:04,274 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:08,970 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-11-18 20:00:08,970 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