./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f 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_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:37:32,063 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:37:32,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:37:32,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:37:32,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:37:32,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:37:32,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:37:32,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:37:32,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:37:32,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:37:32,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:37:32,130 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:37:32,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:37:32,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:37:32,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:37:32,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:37:32,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:37:32,140 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:37:32,142 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:37:32,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:37:32,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:37:32,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:37:32,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:37:32,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:37:32,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:37:32,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:37:32,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:37:32,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:37:32,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:37:32,155 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:37:32,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:37:32,156 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:37:32,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:37:32,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:37:32,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:37:32,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:37:32,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:37:32,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:37:32,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:37:32,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:37:32,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:37:32,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-16 12:37:32,212 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:37:32,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:37:32,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:37:32,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:37:32,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:37:32,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:37:32,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:37:32,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:37:32,216 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:37:32,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:37:32,217 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:37:32,218 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:37:32,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:37:32,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:37:32,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:37:32,218 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:37:32,219 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:37:32,219 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:37:32,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:37:32,219 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:37:32,219 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:37:32,220 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:37:32,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:37:32,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:37:32,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:37:32,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:37:32,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:37:32,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:37:32,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:37:32,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:37:32,223 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_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2022-11-16 12:37:32,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:37:32,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:37:32,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:37:32,592 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:37:32,593 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:37:32,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2022-11-16 12:37:32,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/data/e7eda7b60/a6addae77b48440d8437363c43323d6d/FLAGb7b0087a9 [2022-11-16 12:37:33,422 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:37:33,422 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2022-11-16 12:37:33,440 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/data/e7eda7b60/a6addae77b48440d8437363c43323d6d/FLAGb7b0087a9 [2022-11-16 12:37:33,625 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/data/e7eda7b60/a6addae77b48440d8437363c43323d6d [2022-11-16 12:37:33,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:37:33,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:37:33,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:33,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:37:33,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:37:33,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:33" (1/1) ... [2022-11-16 12:37:33,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77eda17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:33, skipping insertion in model container [2022-11-16 12:37:33,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:33" (1/1) ... [2022-11-16 12:37:33,654 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:37:33,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:37:34,507 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2022-11-16 12:37:34,528 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2022-11-16 12:37:34,636 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2022-11-16 12:37:34,637 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2022-11-16 12:37:34,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:34,673 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-16 12:37:34,674 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@54c9b5e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:34, skipping insertion in model container [2022-11-16 12:37:34,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:34,675 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 12:37:34,676 INFO L158 Benchmark]: Toolchain (without parser) took 1042.99ms. Allocated memory is still 136.3MB. Free memory was 92.4MB in the beginning and 97.9MB in the end (delta: -5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:37:34,677 INFO L158 Benchmark]: CDTParser took 1.62ms. Allocated memory is still 136.3MB. Free memory is still 111.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:37:34,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1038.18ms. Allocated memory is still 136.3MB. Free memory was 92.2MB in the beginning and 97.9MB in the end (delta: -5.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:37:34,679 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.62ms. Allocated memory is still 136.3MB. Free memory is still 111.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1038.18ms. Allocated memory is still 136.3MB. Free memory was 92.2MB in the beginning and 97.9MB in the end (delta: -5.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:37:36,914 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:37:36,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:37:36,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:37:36,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:37:36,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:37:36,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:37:36,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:37:36,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:37:36,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:37:36,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:37:36,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:37:36,981 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:37:36,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:37:36,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:37:36,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:37:36,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:37:36,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:37:36,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:37:37,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:37:37,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:37:37,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:37:37,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:37:37,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:37:37,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:37:37,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:37:37,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:37:37,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:37:37,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:37:37,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:37:37,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:37:37,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:37:37,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:37:37,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:37:37,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:37:37,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:37:37,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:37:37,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:37:37,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:37:37,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:37:37,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:37:37,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-16 12:37:37,080 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:37:37,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:37:37,081 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:37:37,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:37:37,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:37:37,083 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:37:37,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:37:37,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:37:37,085 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:37:37,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:37:37,087 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:37:37,087 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:37:37,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:37:37,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:37:37,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:37:37,089 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 12:37:37,089 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 12:37:37,089 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 12:37:37,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:37:37,090 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 12:37:37,090 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 12:37:37,090 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 12:37:37,090 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:37:37,091 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:37:37,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:37:37,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:37:37,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:37:37,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:37:37,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:37:37,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:37:37,093 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-16 12:37:37,094 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 12:37:37,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 12:37:37,094 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_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2022-11-16 12:37:37,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:37:37,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:37:37,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:37:37,552 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:37:37,555 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:37:37,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2022-11-16 12:37:37,639 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/data/4103530e1/4e51d89ddbc641ec939b83385065c7e3/FLAG6bcbc7cde [2022-11-16 12:37:38,338 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:37:38,339 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2022-11-16 12:37:38,359 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/data/4103530e1/4e51d89ddbc641ec939b83385065c7e3/FLAG6bcbc7cde [2022-11-16 12:37:38,567 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/data/4103530e1/4e51d89ddbc641ec939b83385065c7e3 [2022-11-16 12:37:38,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:37:38,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:37:38,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:38,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:37:38,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:37:38,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:38" (1/1) ... [2022-11-16 12:37:38,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5571cedc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:38, skipping insertion in model container [2022-11-16 12:37:38,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:38" (1/1) ... [2022-11-16 12:37:38,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:37:38,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:37:39,400 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2022-11-16 12:37:39,426 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2022-11-16 12:37:39,580 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2022-11-16 12:37:39,590 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2022-11-16 12:37:39,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:39,638 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 12:37:39,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:37:39,698 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2022-11-16 12:37:39,700 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2022-11-16 12:37:39,760 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2022-11-16 12:37:39,761 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2022-11-16 12:37:39,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:39,777 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:37:39,816 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2022-11-16 12:37:39,818 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2022-11-16 12:37:39,906 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2022-11-16 12:37:39,916 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2022-11-16 12:37:39,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:40,024 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:37:40,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:40 WrapperNode [2022-11-16 12:37:40,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:40,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:37:40,027 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:37:40,027 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:37:40,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:40" (1/1) ... [2022-11-16 12:37:40,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:40" (1/1) ... [2022-11-16 12:37:40,179 INFO L138 Inliner]: procedures = 285, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1200 [2022-11-16 12:37:40,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:37:40,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:37:40,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:37:40,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:37:40,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:40" (1/1) ... [2022-11-16 12:37:40,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:40" (1/1) ... [2022-11-16 12:37:40,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:40" (1/1) ... [2022-11-16 12:37:40,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:40" (1/1) ... [2022-11-16 12:37:40,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:40" (1/1) ... [2022-11-16 12:37:40,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:40" (1/1) ... [2022-11-16 12:37:40,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:40" (1/1) ... [2022-11-16 12:37:40,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:40" (1/1) ... [2022-11-16 12:37:40,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:37:40,346 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:37:40,346 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:37:40,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:37:40,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:40" (1/1) ... [2022-11-16 12:37:40,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:37:40,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:40,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:37:40,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:37:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-16 12:37:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 12:37:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:37:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 12:37:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:37:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:37:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 12:37:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 12:37:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-16 12:37:40,442 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-16 12:37:40,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:37:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:37:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:37:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:37:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-16 12:37:40,443 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-16 12:37:40,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:37:40,444 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-16 12:37:40,444 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-16 12:37:40,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:37:40,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:37:40,804 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:37:40,807 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:37:46,552 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:37:46,583 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:37:46,590 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-11-16 12:37:46,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:37:46 BoogieIcfgContainer [2022-11-16 12:37:46,593 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:37:46,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:37:46,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:37:46,601 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:37:46,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:37:38" (1/3) ... [2022-11-16 12:37:46,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10069951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:37:46, skipping insertion in model container [2022-11-16 12:37:46,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:40" (2/3) ... [2022-11-16 12:37:46,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10069951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:37:46, skipping insertion in model container [2022-11-16 12:37:46,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:37:46" (3/3) ... [2022-11-16 12:37:46,606 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-2.i [2022-11-16 12:37:46,625 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:37:46,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 634 error locations. [2022-11-16 12:37:46,706 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:37:46,713 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;@225b69ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:37:46,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2022-11-16 12:37:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand has 1279 states, 625 states have (on average 2.2448) internal successors, (1403), 1259 states have internal predecessors, (1403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 12:37:46,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:37:46,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:46,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:37:46,732 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:37:46,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:46,739 INFO L85 PathProgramCache]: Analyzing trace with hash 77521, now seen corresponding path program 1 times [2022-11-16 12:37:46,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:37:46,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717270464] [2022-11-16 12:37:46,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:46,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:37:46,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:37:46,759 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:37:46,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 12:37:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:46,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:37:46,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:47,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:37:47,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:47,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:47,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:37:47,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717270464] [2022-11-16 12:37:47,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717270464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:47,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:47,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:37:47,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727896670] [2022-11-16 12:37:47,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:47,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:37:47,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:37:47,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:37:47,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:47,131 INFO L87 Difference]: Start difference. First operand has 1279 states, 625 states have (on average 2.2448) internal successors, (1403), 1259 states have internal predecessors, (1403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:50,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:50,252 INFO L93 Difference]: Finished difference Result 1536 states and 1625 transitions. [2022-11-16 12:37:50,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:37:50,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 3 [2022-11-16 12:37:50,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:50,274 INFO L225 Difference]: With dead ends: 1536 [2022-11-16 12:37:50,274 INFO L226 Difference]: Without dead ends: 1534 [2022-11-16 12:37:50,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:50,279 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 906 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:50,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 1254 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-16 12:37:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2022-11-16 12:37:50,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1299. [2022-11-16 12:37:50,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 659 states have (on average 2.1062215477996964) internal successors, (1388), 1280 states have internal predecessors, (1388), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 12:37:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1418 transitions. [2022-11-16 12:37:50,392 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1418 transitions. Word has length 3 [2022-11-16 12:37:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:50,392 INFO L495 AbstractCegarLoop]: Abstraction has 1299 states and 1418 transitions. [2022-11-16 12:37:50,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1418 transitions. [2022-11-16 12:37:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 12:37:50,393 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:50,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 12:37:50,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:50,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:37:50,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:37:50,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:50,603 INFO L85 PathProgramCache]: Analyzing trace with hash 77522, now seen corresponding path program 1 times [2022-11-16 12:37:50,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:37:50,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025413564] [2022-11-16 12:37:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:50,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:37:50,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:37:50,605 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:37:50,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 12:37:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:50,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:37:50,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:50,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:37:50,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:50,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:50,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:37:50,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025413564] [2022-11-16 12:37:50,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025413564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:50,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:50,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:37:50,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366550600] [2022-11-16 12:37:50,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:50,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:37:50,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:37:50,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:37:50,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:50,785 INFO L87 Difference]: Start difference. First operand 1299 states and 1418 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:55,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:37:55,446 INFO L93 Difference]: Finished difference Result 1890 states and 2056 transitions. [2022-11-16 12:37:55,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:37:55,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 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 3 [2022-11-16 12:37:55,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:37:55,454 INFO L225 Difference]: With dead ends: 1890 [2022-11-16 12:37:55,454 INFO L226 Difference]: Without dead ends: 1890 [2022-11-16 12:37:55,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:37:55,456 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 624 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:37:55,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1754 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-16 12:37:55,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2022-11-16 12:37:55,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1503. [2022-11-16 12:37:55,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1503 states, 862 states have (on average 2.0881670533642693) internal successors, (1800), 1482 states have internal predecessors, (1800), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 12:37:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1834 transitions. [2022-11-16 12:37:55,514 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1834 transitions. Word has length 3 [2022-11-16 12:37:55,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:37:55,514 INFO L495 AbstractCegarLoop]: Abstraction has 1503 states and 1834 transitions. [2022-11-16 12:37:55,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:37:55,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1834 transitions. [2022-11-16 12:37:55,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:37:55,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:37:55,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:37:55,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:37:55,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:37:55,727 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:37:55,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:55,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1111693489, now seen corresponding path program 1 times [2022-11-16 12:37:55,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:37:55,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1978960908] [2022-11-16 12:37:55,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:55,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:37:55,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:37:55,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:37:55,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 12:37:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:55,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:37:55,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:37:55,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:37:55,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:37:56,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:37:56,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:37:56,088 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:37:56,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:37:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:56,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:37:56,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:37:56,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1978960908] [2022-11-16 12:37:56,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1978960908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:56,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:56,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:37:56,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102563856] [2022-11-16 12:37:56,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:56,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:37:56,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:37:56,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:37:56,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:37:56,130 INFO L87 Difference]: Start difference. First operand 1503 states and 1834 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:03,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:03,779 INFO L93 Difference]: Finished difference Result 2568 states and 2977 transitions. [2022-11-16 12:38:03,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:38:03,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 12:38:03,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:03,791 INFO L225 Difference]: With dead ends: 2568 [2022-11-16 12:38:03,791 INFO L226 Difference]: Without dead ends: 2568 [2022-11-16 12:38:03,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:03,799 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 1111 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 2206 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1117 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:03,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1117 Valid, 1808 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2206 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-16 12:38:03,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-11-16 12:38:03,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 1648. [2022-11-16 12:38:03,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1007 states have (on average 2.0685203574975173) internal successors, (2083), 1627 states have internal predecessors, (2083), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 12:38:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2117 transitions. [2022-11-16 12:38:03,845 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2117 transitions. Word has length 8 [2022-11-16 12:38:03,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:03,846 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2117 transitions. [2022-11-16 12:38:03,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2117 transitions. [2022-11-16 12:38:03,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:38:03,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:03,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:03,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:04,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:04,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:04,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:04,060 INFO L85 PathProgramCache]: Analyzing trace with hash -102759776, now seen corresponding path program 1 times [2022-11-16 12:38:04,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:04,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934204175] [2022-11-16 12:38:04,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:04,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:04,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:04,063 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:04,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 12:38:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:04,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:38:04,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:04,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:38:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:04,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:04,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:04,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934204175] [2022-11-16 12:38:04,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934204175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:04,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:04,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:38:04,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903671697] [2022-11-16 12:38:04,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:04,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:04,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:04,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:04,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:04,281 INFO L87 Difference]: Start difference. First operand 1648 states and 2117 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:09,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:09,168 INFO L93 Difference]: Finished difference Result 2810 states and 3510 transitions. [2022-11-16 12:38:09,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:38:09,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:38:09,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:09,186 INFO L225 Difference]: With dead ends: 2810 [2022-11-16 12:38:09,187 INFO L226 Difference]: Without dead ends: 2810 [2022-11-16 12:38:09,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:09,189 INFO L413 NwaCegarLoop]: 1319 mSDtfsCounter, 2331 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:09,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 2575 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-16 12:38:09,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2810 states. [2022-11-16 12:38:09,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2810 to 1603. [2022-11-16 12:38:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1603 states, 1007 states have (on average 2.009930486593843) internal successors, (2024), 1582 states have internal predecessors, (2024), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 12:38:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1603 states to 1603 states and 2058 transitions. [2022-11-16 12:38:09,234 INFO L78 Accepts]: Start accepts. Automaton has 1603 states and 2058 transitions. Word has length 9 [2022-11-16 12:38:09,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:09,234 INFO L495 AbstractCegarLoop]: Abstraction has 1603 states and 2058 transitions. [2022-11-16 12:38:09,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1603 states and 2058 transitions. [2022-11-16 12:38:09,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 12:38:09,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:09,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:09,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:09,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:09,458 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:09,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:09,459 INFO L85 PathProgramCache]: Analyzing trace with hash -102759775, now seen corresponding path program 1 times [2022-11-16 12:38:09,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:09,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360945840] [2022-11-16 12:38:09,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:09,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:09,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:09,462 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:09,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 12:38:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:09,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:38:09,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:09,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:38:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:09,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:09,694 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:09,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360945840] [2022-11-16 12:38:09,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360945840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:09,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:09,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:38:09,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036807654] [2022-11-16 12:38:09,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:09,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:09,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:09,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:09,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:09,698 INFO L87 Difference]: Start difference. First operand 1603 states and 2058 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:15,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:15,708 INFO L93 Difference]: Finished difference Result 2439 states and 3103 transitions. [2022-11-16 12:38:15,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:38:15,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-16 12:38:15,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:15,716 INFO L225 Difference]: With dead ends: 2439 [2022-11-16 12:38:15,716 INFO L226 Difference]: Without dead ends: 2439 [2022-11-16 12:38:15,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:15,717 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 1581 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:15,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 2714 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-16 12:38:15,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2022-11-16 12:38:15,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 1593. [2022-11-16 12:38:15,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1007 states have (on average 1.9860973187686197) internal successors, (2000), 1572 states have internal predecessors, (2000), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-11-16 12:38:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2034 transitions. [2022-11-16 12:38:15,752 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2034 transitions. Word has length 9 [2022-11-16 12:38:15,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:15,753 INFO L495 AbstractCegarLoop]: Abstraction has 1593 states and 2034 transitions. [2022-11-16 12:38:15,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2034 transitions. [2022-11-16 12:38:15,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 12:38:15,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:15,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:15,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:15,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:15,966 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr516ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:15,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:15,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1033799265, now seen corresponding path program 1 times [2022-11-16 12:38:15,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:15,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744494294] [2022-11-16 12:38:15,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:15,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:15,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:15,968 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:15,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 12:38:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:16,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:38:16,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:16,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:16,260 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:16,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744494294] [2022-11-16 12:38:16,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1744494294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:16,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:16,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:16,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059444423] [2022-11-16 12:38:16,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:16,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:16,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:16,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:16,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:16,262 INFO L87 Difference]: Start difference. First operand 1593 states and 2034 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:17,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:17,312 INFO L93 Difference]: Finished difference Result 2263 states and 2807 transitions. [2022-11-16 12:38:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:38:17,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 12:38:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:17,320 INFO L225 Difference]: With dead ends: 2263 [2022-11-16 12:38:17,320 INFO L226 Difference]: Without dead ends: 2263 [2022-11-16 12:38:17,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:17,321 INFO L413 NwaCegarLoop]: 1452 mSDtfsCounter, 749 mSDsluCounter, 2415 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 3867 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:17,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 3867 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:38:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2022-11-16 12:38:17,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 1851. [2022-11-16 12:38:17,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1851 states, 1262 states have (on average 1.9904912836767037) internal successors, (2512), 1827 states have internal predecessors, (2512), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-16 12:38:17,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2552 transitions. [2022-11-16 12:38:17,359 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2552 transitions. Word has length 11 [2022-11-16 12:38:17,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:17,359 INFO L495 AbstractCegarLoop]: Abstraction has 1851 states and 2552 transitions. [2022-11-16 12:38:17,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:17,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2552 transitions. [2022-11-16 12:38:17,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 12:38:17,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:17,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:17,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:17,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:17,572 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:17,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:17,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1306900600, now seen corresponding path program 1 times [2022-11-16 12:38:17,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:17,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515522189] [2022-11-16 12:38:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:17,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:17,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:17,574 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:17,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 12:38:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:17,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:38:17,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:17,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:38:17,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:38:17,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 12:38:17,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-11-16 12:38:17,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:38:17,870 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 70 treesize of output 26 [2022-11-16 12:38:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:17,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:17,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:17,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515522189] [2022-11-16 12:38:17,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515522189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:17,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:17,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:17,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975093449] [2022-11-16 12:38:17,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:17,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:17,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:17,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:17,894 INFO L87 Difference]: Start difference. First operand 1851 states and 2552 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:20,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:20,113 INFO L93 Difference]: Finished difference Result 1999 states and 2407 transitions. [2022-11-16 12:38:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:38:20,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-16 12:38:20,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:20,120 INFO L225 Difference]: With dead ends: 1999 [2022-11-16 12:38:20,120 INFO L226 Difference]: Without dead ends: 1999 [2022-11-16 12:38:20,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:20,121 INFO L413 NwaCegarLoop]: 1384 mSDtfsCounter, 502 mSDsluCounter, 2472 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 3856 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:20,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 3856 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 12:38:20,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2022-11-16 12:38:20,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1493. [2022-11-16 12:38:20,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 906 states have (on average 1.9757174392935983) internal successors, (1790), 1471 states have internal predecessors, (1790), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:38:20,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 1826 transitions. [2022-11-16 12:38:20,152 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 1826 transitions. Word has length 14 [2022-11-16 12:38:20,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:20,153 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 1826 transitions. [2022-11-16 12:38:20,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 1826 transitions. [2022-11-16 12:38:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 12:38:20,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:20,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:20,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:20,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:20,372 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:20,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:20,373 INFO L85 PathProgramCache]: Analyzing trace with hash 769788685, now seen corresponding path program 1 times [2022-11-16 12:38:20,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:20,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924749978] [2022-11-16 12:38:20,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:20,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:20,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:20,375 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:20,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 12:38:20,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:20,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 12:38:20,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:20,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:20,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:20,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:20,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924749978] [2022-11-16 12:38:20,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924749978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:20,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:20,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:38:20,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439132408] [2022-11-16 12:38:20,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:20,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:38:20,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:20,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:38:20,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:38:20,614 INFO L87 Difference]: Start difference. First operand 1493 states and 1826 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:20,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:20,644 INFO L93 Difference]: Finished difference Result 1433 states and 1740 transitions. [2022-11-16 12:38:20,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:38:20,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-11-16 12:38:20,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:20,650 INFO L225 Difference]: With dead ends: 1433 [2022-11-16 12:38:20,650 INFO L226 Difference]: Without dead ends: 1433 [2022-11-16 12:38:20,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:38:20,651 INFO L413 NwaCegarLoop]: 1237 mSDtfsCounter, 1163 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:20,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 1306 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:38:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2022-11-16 12:38:20,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1433. [2022-11-16 12:38:20,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 870 states have (on average 1.9586206896551723) internal successors, (1704), 1411 states have internal predecessors, (1704), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:38:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1740 transitions. [2022-11-16 12:38:20,677 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1740 transitions. Word has length 19 [2022-11-16 12:38:20,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:20,677 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 1740 transitions. [2022-11-16 12:38:20,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1740 transitions. [2022-11-16 12:38:20,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-16 12:38:20,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:20,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:20,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:20,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:20,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:20,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:20,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1032548102, now seen corresponding path program 1 times [2022-11-16 12:38:20,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:20,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488619011] [2022-11-16 12:38:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:20,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:20,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:20,899 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:20,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 12:38:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:21,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:38:21,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:21,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:21,159 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:21,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488619011] [2022-11-16 12:38:21,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488619011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:21,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:21,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:21,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598544095] [2022-11-16 12:38:21,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:21,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:21,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:21,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:21,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:21,162 INFO L87 Difference]: Start difference. First operand 1433 states and 1740 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:21,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:21,238 INFO L93 Difference]: Finished difference Result 1405 states and 1684 transitions. [2022-11-16 12:38:21,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:38:21,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) 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 21 [2022-11-16 12:38:21,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:21,242 INFO L225 Difference]: With dead ends: 1405 [2022-11-16 12:38:21,242 INFO L226 Difference]: Without dead ends: 1405 [2022-11-16 12:38:21,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:21,243 INFO L413 NwaCegarLoop]: 1192 mSDtfsCounter, 1144 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:21,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 2446 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:38:21,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2022-11-16 12:38:21,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1403. [2022-11-16 12:38:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 854 states have (on average 1.9274004683840749) internal successors, (1646), 1381 states have internal predecessors, (1646), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:38:21,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1682 transitions. [2022-11-16 12:38:21,264 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1682 transitions. Word has length 21 [2022-11-16 12:38:21,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:21,264 INFO L495 AbstractCegarLoop]: Abstraction has 1403 states and 1682 transitions. [2022-11-16 12:38:21,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:21,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1682 transitions. [2022-11-16 12:38:21,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 12:38:21,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:21,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:21,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:21,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:21,478 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:21,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:21,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308372, now seen corresponding path program 1 times [2022-11-16 12:38:21,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:21,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433174379] [2022-11-16 12:38:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:21,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:21,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:21,481 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:21,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 12:38:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:21,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:38:21,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:21,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:38:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:21,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:21,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:21,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433174379] [2022-11-16 12:38:21,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433174379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:21,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:21,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:21,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617621580] [2022-11-16 12:38:21,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:21,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:38:21,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:21,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:38:21,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:21,819 INFO L87 Difference]: Start difference. First operand 1403 states and 1682 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:27,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:27,669 INFO L93 Difference]: Finished difference Result 2571 states and 3078 transitions. [2022-11-16 12:38:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:38:27,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-11-16 12:38:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:27,679 INFO L225 Difference]: With dead ends: 2571 [2022-11-16 12:38:27,680 INFO L226 Difference]: Without dead ends: 2571 [2022-11-16 12:38:27,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:38:27,681 INFO L413 NwaCegarLoop]: 1147 mSDtfsCounter, 2420 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2423 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 2381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:27,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2423 Valid, 2731 Invalid, 2381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-16 12:38:27,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2022-11-16 12:38:27,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 1399. [2022-11-16 12:38:27,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 854 states have (on average 1.9180327868852458) internal successors, (1638), 1377 states have internal predecessors, (1638), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:38:27,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1674 transitions. [2022-11-16 12:38:27,710 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1674 transitions. Word has length 35 [2022-11-16 12:38:27,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:27,711 INFO L495 AbstractCegarLoop]: Abstraction has 1399 states and 1674 transitions. [2022-11-16 12:38:27,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:27,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1674 transitions. [2022-11-16 12:38:27,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 12:38:27,712 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:27,712 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:27,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:27,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:27,926 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:27,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:27,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1673308373, now seen corresponding path program 1 times [2022-11-16 12:38:27,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:27,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843228290] [2022-11-16 12:38:27,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:27,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:27,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:27,930 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:27,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 12:38:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:28,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:38:28,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:28,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:38:28,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:28,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:28,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:28,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843228290] [2022-11-16 12:38:28,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843228290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:28,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:28,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:28,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125205917] [2022-11-16 12:38:28,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:28,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:38:28,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:28,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:38:28,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:28,512 INFO L87 Difference]: Start difference. First operand 1399 states and 1674 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:35,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:35,235 INFO L93 Difference]: Finished difference Result 2213 states and 2657 transitions. [2022-11-16 12:38:35,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:38:35,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-11-16 12:38:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:35,243 INFO L225 Difference]: With dead ends: 2213 [2022-11-16 12:38:35,243 INFO L226 Difference]: Without dead ends: 2213 [2022-11-16 12:38:35,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:38:35,244 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 2195 mSDsluCounter, 1753 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2195 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 2161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:35,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2195 Valid, 3291 Invalid, 2161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-16 12:38:35,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2022-11-16 12:38:35,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1395. [2022-11-16 12:38:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 854 states have (on average 1.9086651053864168) internal successors, (1630), 1373 states have internal predecessors, (1630), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:38:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1666 transitions. [2022-11-16 12:38:35,280 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1666 transitions. Word has length 35 [2022-11-16 12:38:35,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:35,280 INFO L495 AbstractCegarLoop]: Abstraction has 1395 states and 1666 transitions. [2022-11-16 12:38:35,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1666 transitions. [2022-11-16 12:38:35,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-16 12:38:35,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:35,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:35,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:38:35,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:35,494 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:35,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:35,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2063651411, now seen corresponding path program 1 times [2022-11-16 12:38:35,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:35,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527921745] [2022-11-16 12:38:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:35,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:35,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:35,497 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:35,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 12:38:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:35,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:38:35,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:35,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:35,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:35,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527921745] [2022-11-16 12:38:35,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527921745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:35,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:35,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:35,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329565706] [2022-11-16 12:38:35,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:35,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:38:35,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:35,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:38:35,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:38:35,857 INFO L87 Difference]: Start difference. First operand 1395 states and 1666 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:35,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:35,928 INFO L93 Difference]: Finished difference Result 1383 states and 1646 transitions. [2022-11-16 12:38:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:38:35,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-11-16 12:38:35,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:35,933 INFO L225 Difference]: With dead ends: 1383 [2022-11-16 12:38:35,933 INFO L226 Difference]: Without dead ends: 1383 [2022-11-16 12:38:35,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:38:35,934 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 1113 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:35,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 2424 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:38:35,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2022-11-16 12:38:35,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1383. [2022-11-16 12:38:35,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 842 states have (on average 1.9121140142517814) internal successors, (1610), 1361 states have internal predecessors, (1610), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-11-16 12:38:35,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1646 transitions. [2022-11-16 12:38:35,954 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1646 transitions. Word has length 54 [2022-11-16 12:38:35,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:35,955 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 1646 transitions. [2022-11-16 12:38:35,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:35,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1646 transitions. [2022-11-16 12:38:35,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 12:38:35,956 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:35,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:35,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:36,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:36,170 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:36,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:36,170 INFO L85 PathProgramCache]: Analyzing trace with hash -202865055, now seen corresponding path program 1 times [2022-11-16 12:38:36,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:36,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30345118] [2022-11-16 12:38:36,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:36,171 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:36,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:36,172 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:36,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 12:38:36,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:36,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:38:36,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:36,710 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:38:36,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 24 [2022-11-16 12:38:36,798 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-16 12:38:36,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 28 [2022-11-16 12:38:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:37,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:37,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:37,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30345118] [2022-11-16 12:38:37,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30345118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:37,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:37,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:37,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096937517] [2022-11-16 12:38:37,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:37,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:38:37,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:37,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:37,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:38:37,367 INFO L87 Difference]: Start difference. First operand 1383 states and 1646 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:43,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:43,000 INFO L93 Difference]: Finished difference Result 3211 states and 3774 transitions. [2022-11-16 12:38:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:38:43,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-16 12:38:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:43,010 INFO L225 Difference]: With dead ends: 3211 [2022-11-16 12:38:43,010 INFO L226 Difference]: Without dead ends: 3211 [2022-11-16 12:38:43,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:38:43,013 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 3291 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3291 SdHoareTripleChecker+Valid, 2330 SdHoareTripleChecker+Invalid, 1799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:43,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3291 Valid, 2330 Invalid, 1799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1753 Invalid, 0 Unknown, 2 Unchecked, 5.5s Time] [2022-11-16 12:38:43,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2022-11-16 12:38:43,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 1837. [2022-11-16 12:38:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1280 states have (on average 1.8984375) internal successors, (2430), 1802 states have internal predecessors, (2430), 31 states have call successors, (31), 8 states have call predecessors, (31), 7 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-16 12:38:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2492 transitions. [2022-11-16 12:38:43,056 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2492 transitions. Word has length 62 [2022-11-16 12:38:43,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:43,057 INFO L495 AbstractCegarLoop]: Abstraction has 1837 states and 2492 transitions. [2022-11-16 12:38:43,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2492 transitions. [2022-11-16 12:38:43,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-16 12:38:43,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:43,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:43,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:43,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:43,275 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:43,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:43,276 INFO L85 PathProgramCache]: Analyzing trace with hash -202865054, now seen corresponding path program 1 times [2022-11-16 12:38:43,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:43,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879385269] [2022-11-16 12:38:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:43,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:43,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:43,278 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:43,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 12:38:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:43,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:38:43,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:43,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:38:43,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:38:43,852 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:38:43,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:38:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:44,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:44,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:44,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879385269] [2022-11-16 12:38:44,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879385269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:44,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:44,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:38:44,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230477708] [2022-11-16 12:38:44,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:44,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:38:44,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:44,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:44,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:38:44,614 INFO L87 Difference]: Start difference. First operand 1837 states and 2492 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:48,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:48,947 INFO L93 Difference]: Finished difference Result 1843 states and 2499 transitions. [2022-11-16 12:38:48,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:38:48,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-16 12:38:48,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:48,959 INFO L225 Difference]: With dead ends: 1843 [2022-11-16 12:38:48,960 INFO L226 Difference]: Without dead ends: 1843 [2022-11-16 12:38:48,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:38:48,961 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 111 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 1173 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:48,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 2396 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1173 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-16 12:38:48,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2022-11-16 12:38:48,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1842. [2022-11-16 12:38:48,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1284 states have (on average 1.895638629283489) internal successors, (2434), 1806 states have internal predecessors, (2434), 32 states have call successors, (32), 9 states have call predecessors, (32), 7 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-16 12:38:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2498 transitions. [2022-11-16 12:38:48,993 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2498 transitions. Word has length 62 [2022-11-16 12:38:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:48,994 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2498 transitions. [2022-11-16 12:38:48,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2498 transitions. [2022-11-16 12:38:48,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:38:48,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:48,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:49,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:38:49,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:49,212 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:49,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:49,212 INFO L85 PathProgramCache]: Analyzing trace with hash -904346310, now seen corresponding path program 1 times [2022-11-16 12:38:49,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:49,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807090933] [2022-11-16 12:38:49,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:49,213 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:49,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:49,214 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:49,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 12:38:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:49,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:38:49,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:49,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:49,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:49,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807090933] [2022-11-16 12:38:49,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807090933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:49,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:49,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:38:49,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525000217] [2022-11-16 12:38:49,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:49,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:38:49,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:49,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:49,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:38:49,660 INFO L87 Difference]: Start difference. First operand 1842 states and 2498 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:49,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:49,804 INFO L93 Difference]: Finished difference Result 1868 states and 2525 transitions. [2022-11-16 12:38:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:38:49,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-16 12:38:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:49,810 INFO L225 Difference]: With dead ends: 1868 [2022-11-16 12:38:49,810 INFO L226 Difference]: Without dead ends: 1868 [2022-11-16 12:38:49,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:38:49,811 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 19 mSDsluCounter, 4722 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5905 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:49,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5905 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:38:49,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2022-11-16 12:38:49,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1866. [2022-11-16 12:38:49,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1866 states, 1302 states have (on average 1.8870967741935485) internal successors, (2457), 1826 states have internal predecessors, (2457), 34 states have call successors, (34), 13 states have call predecessors, (34), 11 states have return successors, (34), 30 states have call predecessors, (34), 34 states have call successors, (34) [2022-11-16 12:38:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1866 states to 1866 states and 2525 transitions. [2022-11-16 12:38:49,850 INFO L78 Accepts]: Start accepts. Automaton has 1866 states and 2525 transitions. Word has length 68 [2022-11-16 12:38:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:49,850 INFO L495 AbstractCegarLoop]: Abstraction has 1866 states and 2525 transitions. [2022-11-16 12:38:49,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:38:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1866 states and 2525 transitions. [2022-11-16 12:38:49,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-16 12:38:49,852 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:49,852 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:49,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -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)] Ended with exit code 0 [2022-11-16 12:38:50,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:50,067 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:50,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash -961994179, now seen corresponding path program 1 times [2022-11-16 12:38:50,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:50,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [595202643] [2022-11-16 12:38:50,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:50,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:50,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:50,070 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:50,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 12:38:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:50,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:38:50,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:50,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:50,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:50,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [595202643] [2022-11-16 12:38:50,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [595202643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:50,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:50,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:38:50,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654341205] [2022-11-16 12:38:50,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:50,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:38:50,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:50,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:50,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:38:50,631 INFO L87 Difference]: Start difference. First operand 1866 states and 2525 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:38:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:50,891 INFO L93 Difference]: Finished difference Result 1878 states and 2539 transitions. [2022-11-16 12:38:50,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:38:50,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2022-11-16 12:38:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:50,898 INFO L225 Difference]: With dead ends: 1878 [2022-11-16 12:38:50,898 INFO L226 Difference]: Without dead ends: 1878 [2022-11-16 12:38:50,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:38:50,899 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 23 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:50,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 4613 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:38:50,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2022-11-16 12:38:50,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1869. [2022-11-16 12:38:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1869 states, 1304 states have (on average 1.8857361963190185) internal successors, (2459), 1828 states have internal predecessors, (2459), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-16 12:38:50,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1869 states to 1869 states and 2528 transitions. [2022-11-16 12:38:50,934 INFO L78 Accepts]: Start accepts. Automaton has 1869 states and 2528 transitions. Word has length 68 [2022-11-16 12:38:50,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:50,934 INFO L495 AbstractCegarLoop]: Abstraction has 1869 states and 2528 transitions. [2022-11-16 12:38:50,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 12:38:50,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1869 states and 2528 transitions. [2022-11-16 12:38:50,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 12:38:50,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:50,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:50,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:51,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:51,156 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:51,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:51,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1684223946, now seen corresponding path program 1 times [2022-11-16 12:38:51,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:51,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139345704] [2022-11-16 12:38:51,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:51,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:51,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:51,158 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:51,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 12:38:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:51,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:38:51,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:51,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:38:51,907 WARN L855 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |alt_malloc_#res.base| (_ bv1 1)))) is different from true [2022-11-16 12:38:51,932 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-16 12:38:51,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-16 12:38:51,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:51,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:51,948 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:51,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139345704] [2022-11-16 12:38:51,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139345704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:51,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:51,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:38:51,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821721869] [2022-11-16 12:38:51,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:51,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:38:51,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:51,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:38:51,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2022-11-16 12:38:51,950 INFO L87 Difference]: Start difference. First operand 1869 states and 2528 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:38:58,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:38:58,192 INFO L93 Difference]: Finished difference Result 3193 states and 4238 transitions. [2022-11-16 12:38:58,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:38:58,193 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2022-11-16 12:38:58,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:38:58,202 INFO L225 Difference]: With dead ends: 3193 [2022-11-16 12:38:58,202 INFO L226 Difference]: Without dead ends: 3193 [2022-11-16 12:38:58,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2022-11-16 12:38:58,203 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 1620 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 2738 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 4371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1612 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:38:58,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 3027 Invalid, 4371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2738 Invalid, 0 Unknown, 1612 Unchecked, 6.1s Time] [2022-11-16 12:38:58,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2022-11-16 12:38:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 1868. [2022-11-16 12:38:58,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1868 states, 1304 states have (on average 1.88420245398773) internal successors, (2457), 1827 states have internal predecessors, (2457), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-16 12:38:58,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1868 states to 1868 states and 2526 transitions. [2022-11-16 12:38:58,260 INFO L78 Accepts]: Start accepts. Automaton has 1868 states and 2526 transitions. Word has length 73 [2022-11-16 12:38:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:38:58,261 INFO L495 AbstractCegarLoop]: Abstraction has 1868 states and 2526 transitions. [2022-11-16 12:38:58,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:38:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1868 states and 2526 transitions. [2022-11-16 12:38:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 12:38:58,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:38:58,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:38:58,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:38:58,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:58,475 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:38:58,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1684223945, now seen corresponding path program 1 times [2022-11-16 12:38:58,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:38:58,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [647209950] [2022-11-16 12:38:58,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:58,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:38:58,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:38:58,478 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:38:58,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-16 12:38:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:58,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:38:59,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:38:59,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:38:59,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:38:59,691 WARN L855 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_1107 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |alt_malloc_#res.base| v_ArrVal_1107))) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2022-11-16 12:38:59,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:38:59,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:38:59,727 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:38:59,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:38:59,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:38:59,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:38:59,752 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:38:59,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [647209950] [2022-11-16 12:38:59,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [647209950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:59,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:59,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:38:59,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171850278] [2022-11-16 12:38:59,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:59,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:38:59,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:38:59,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:38:59,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2022-11-16 12:38:59,754 INFO L87 Difference]: Start difference. First operand 1868 states and 2526 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:10,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:10,691 INFO L93 Difference]: Finished difference Result 3264 states and 4363 transitions. [2022-11-16 12:39:10,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:39:10,692 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2022-11-16 12:39:10,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:10,699 INFO L225 Difference]: With dead ends: 3264 [2022-11-16 12:39:10,700 INFO L226 Difference]: Without dead ends: 3264 [2022-11-16 12:39:10,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2022-11-16 12:39:10,701 INFO L413 NwaCegarLoop]: 1299 mSDtfsCounter, 2396 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 3959 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 5893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 3959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1903 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:10,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2402 Valid, 2955 Invalid, 5893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 3959 Invalid, 0 Unknown, 1903 Unchecked, 10.8s Time] [2022-11-16 12:39:10,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3264 states. [2022-11-16 12:39:10,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3264 to 1864. [2022-11-16 12:39:10,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1308 states have (on average 1.8692660550458715) internal successors, (2445), 1823 states have internal predecessors, (2445), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-16 12:39:10,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2514 transitions. [2022-11-16 12:39:10,741 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2514 transitions. Word has length 73 [2022-11-16 12:39:10,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:10,741 INFO L495 AbstractCegarLoop]: Abstraction has 1864 states and 2514 transitions. [2022-11-16 12:39:10,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:10,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2514 transitions. [2022-11-16 12:39:10,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-16 12:39:10,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:10,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:10,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:10,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:10,960 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:10,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:10,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1696557543, now seen corresponding path program 1 times [2022-11-16 12:39:10,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:10,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1218422339] [2022-11-16 12:39:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:10,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:10,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:10,963 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:39:10,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-16 12:39:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:11,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:39:11,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:11,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:39:11,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:39:11,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-16 12:39:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:11,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:11,550 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:11,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1218422339] [2022-11-16 12:39:11,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1218422339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:11,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:11,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:39:11,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102734759] [2022-11-16 12:39:11,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:11,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:39:11,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:39:11,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:39:11,553 INFO L87 Difference]: Start difference. First operand 1864 states and 2514 transitions. Second operand has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 12:39:18,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:18,297 INFO L93 Difference]: Finished difference Result 1879 states and 2530 transitions. [2022-11-16 12:39:18,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:39:18,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 80 [2022-11-16 12:39:18,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:18,302 INFO L225 Difference]: With dead ends: 1879 [2022-11-16 12:39:18,302 INFO L226 Difference]: Without dead ends: 1879 [2022-11-16 12:39:18,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:39:18,303 INFO L413 NwaCegarLoop]: 1169 mSDtfsCounter, 23 mSDsluCounter, 3748 mSDsCounter, 0 mSdLazyCounter, 3317 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 4917 SdHoareTripleChecker+Invalid, 3319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:18,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 4917 Invalid, 3319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3317 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-16 12:39:18,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-11-16 12:39:18,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1878. [2022-11-16 12:39:18,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1320 states have (on average 1.8643939393939395) internal successors, (2461), 1835 states have internal predecessors, (2461), 34 states have call successors, (34), 15 states have call predecessors, (34), 14 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-16 12:39:18,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2530 transitions. [2022-11-16 12:39:18,331 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2530 transitions. Word has length 80 [2022-11-16 12:39:18,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:18,331 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2530 transitions. [2022-11-16 12:39:18,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 12:39:18,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2530 transitions. [2022-11-16 12:39:18,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-16 12:39:18,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:18,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:18,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:18,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:18,548 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:18,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:18,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1053676349, now seen corresponding path program 1 times [2022-11-16 12:39:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:18,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269306830] [2022-11-16 12:39:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:18,549 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:18,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:18,550 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:39:18,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 12:39:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:18,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-16 12:39:18,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:18,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:39:19,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:39:19,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:39:19,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-16 12:39:19,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 12:39:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:19,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:19,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:19,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269306830] [2022-11-16 12:39:19,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269306830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:19,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:19,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:39:19,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129040977] [2022-11-16 12:39:19,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:19,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:39:19,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:19,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:39:19,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:39:19,228 INFO L87 Difference]: Start difference. First operand 1878 states and 2530 transitions. Second operand has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:28,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:28,655 INFO L93 Difference]: Finished difference Result 1878 states and 2528 transitions. [2022-11-16 12:39:28,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:39:28,656 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 81 [2022-11-16 12:39:28,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:28,661 INFO L225 Difference]: With dead ends: 1878 [2022-11-16 12:39:28,661 INFO L226 Difference]: Without dead ends: 1878 [2022-11-16 12:39:28,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:39:28,662 INFO L413 NwaCegarLoop]: 1164 mSDtfsCounter, 19 mSDsluCounter, 4769 mSDsCounter, 0 mSdLazyCounter, 3477 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 5933 SdHoareTripleChecker+Invalid, 3478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:28,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 5933 Invalid, 3478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3477 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-16 12:39:28,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2022-11-16 12:39:28,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1878. [2022-11-16 12:39:28,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1878 states, 1320 states have (on average 1.8628787878787878) internal successors, (2459), 1835 states have internal predecessors, (2459), 34 states have call successors, (34), 15 states have call predecessors, (34), 14 states have return successors, (35), 30 states have call predecessors, (35), 34 states have call successors, (35) [2022-11-16 12:39:28,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1878 states to 1878 states and 2528 transitions. [2022-11-16 12:39:28,695 INFO L78 Accepts]: Start accepts. Automaton has 1878 states and 2528 transitions. Word has length 81 [2022-11-16 12:39:28,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:28,696 INFO L495 AbstractCegarLoop]: Abstraction has 1878 states and 2528 transitions. [2022-11-16 12:39:28,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:39:28,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1878 states and 2528 transitions. [2022-11-16 12:39:28,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-16 12:39:28,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:28,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:28,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:28,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:28,915 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:28,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash 491350102, now seen corresponding path program 1 times [2022-11-16 12:39:28,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:28,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391418506] [2022-11-16 12:39:28,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:28,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:28,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:28,919 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:39:28,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-16 12:39:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:29,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:39:29,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:29,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:29,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:39:29,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:29,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391418506] [2022-11-16 12:39:29,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391418506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:29,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:29,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:39:29,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851879538] [2022-11-16 12:39:29,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:29,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:39:29,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:29,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:39:29,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:39:29,492 INFO L87 Difference]: Start difference. First operand 1878 states and 2528 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:39:29,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:29,612 INFO L93 Difference]: Finished difference Result 1894 states and 2546 transitions. [2022-11-16 12:39:29,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:39:29,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 88 [2022-11-16 12:39:29,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:29,618 INFO L225 Difference]: With dead ends: 1894 [2022-11-16 12:39:29,618 INFO L226 Difference]: Without dead ends: 1888 [2022-11-16 12:39:29,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:39:29,620 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 11 mSDsluCounter, 3500 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4672 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:29,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4672 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:39:29,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2022-11-16 12:39:29,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1888. [2022-11-16 12:39:29,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1328 states have (on average 1.8591867469879517) internal successors, (2469), 1845 states have internal predecessors, (2469), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:39:29,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2540 transitions. [2022-11-16 12:39:29,658 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2540 transitions. Word has length 88 [2022-11-16 12:39:29,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:29,659 INFO L495 AbstractCegarLoop]: Abstraction has 1888 states and 2540 transitions. [2022-11-16 12:39:29,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:39:29,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2540 transitions. [2022-11-16 12:39:29,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-16 12:39:29,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:29,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:29,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:29,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:29,875 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:29,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:29,876 INFO L85 PathProgramCache]: Analyzing trace with hash -385822936, now seen corresponding path program 1 times [2022-11-16 12:39:29,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:29,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702452408] [2022-11-16 12:39:29,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:29,877 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:29,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:29,879 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:39:29,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-16 12:39:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:30,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:39:30,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:30,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:30,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:30,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702452408] [2022-11-16 12:39:30,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702452408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:30,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:39:30,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-16 12:39:30,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319090147] [2022-11-16 12:39:30,673 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:30,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:39:30,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:30,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:39:30,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:39:30,674 INFO L87 Difference]: Start difference. First operand 1888 states and 2540 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:31,099 INFO L93 Difference]: Finished difference Result 1914 states and 2570 transitions. [2022-11-16 12:39:31,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:39:31,100 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 89 [2022-11-16 12:39:31,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:31,107 INFO L225 Difference]: With dead ends: 1914 [2022-11-16 12:39:31,107 INFO L226 Difference]: Without dead ends: 1902 [2022-11-16 12:39:31,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:39:31,108 INFO L413 NwaCegarLoop]: 1175 mSDtfsCounter, 45 mSDsluCounter, 7006 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 8181 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:31,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 8181 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:39:31,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1902 states. [2022-11-16 12:39:31,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1902 to 1896. [2022-11-16 12:39:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1896 states, 1336 states have (on average 1.8555389221556886) internal successors, (2479), 1853 states have internal predecessors, (2479), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:39:31,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1896 states to 1896 states and 2550 transitions. [2022-11-16 12:39:31,148 INFO L78 Accepts]: Start accepts. Automaton has 1896 states and 2550 transitions. Word has length 89 [2022-11-16 12:39:31,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:31,149 INFO L495 AbstractCegarLoop]: Abstraction has 1896 states and 2550 transitions. [2022-11-16 12:39:31,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:31,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1896 states and 2550 transitions. [2022-11-16 12:39:31,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-16 12:39:31,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:31,154 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:31,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:31,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:31,372 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:31,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:31,372 INFO L85 PathProgramCache]: Analyzing trace with hash 55938262, now seen corresponding path program 2 times [2022-11-16 12:39:31,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:31,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412001562] [2022-11-16 12:39:31,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:39:31,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:31,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:31,375 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:39:31,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-16 12:39:32,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:39:32,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:39:32,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:39:32,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:32,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:32,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:32,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412001562] [2022-11-16 12:39:32,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412001562] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:32,744 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:39:32,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:39:32,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546403823] [2022-11-16 12:39:32,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:32,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:39:32,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:32,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:39:32,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:39:32,746 INFO L87 Difference]: Start difference. First operand 1896 states and 2550 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:33,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:33,824 INFO L93 Difference]: Finished difference Result 1950 states and 2618 transitions. [2022-11-16 12:39:33,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 12:39:33,825 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 92 [2022-11-16 12:39:33,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:33,830 INFO L225 Difference]: With dead ends: 1950 [2022-11-16 12:39:33,830 INFO L226 Difference]: Without dead ends: 1938 [2022-11-16 12:39:33,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=343, Invalid=649, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:39:33,831 INFO L413 NwaCegarLoop]: 1181 mSDtfsCounter, 98 mSDsluCounter, 9384 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 10565 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:33,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 10565 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:39:33,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2022-11-16 12:39:33,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 1914. [2022-11-16 12:39:33,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1914 states, 1354 states have (on average 1.8485967503692762) internal successors, (2503), 1871 states have internal predecessors, (2503), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:39:33,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2574 transitions. [2022-11-16 12:39:33,860 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2574 transitions. Word has length 92 [2022-11-16 12:39:33,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:33,861 INFO L495 AbstractCegarLoop]: Abstraction has 1914 states and 2574 transitions. [2022-11-16 12:39:33,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 16 states have internal predecessors, (96), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:33,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2574 transitions. [2022-11-16 12:39:33,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-16 12:39:33,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:33,863 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:33,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:39:34,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:34,075 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:34,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:34,076 INFO L85 PathProgramCache]: Analyzing trace with hash 675941270, now seen corresponding path program 3 times [2022-11-16 12:39:34,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:34,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016899035] [2022-11-16 12:39:34,077 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:39:34,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:34,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:34,078 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:39:34,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-16 12:39:35,301 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 12:39:35,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:39:35,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:39:35,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:35,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:37,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:37,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016899035] [2022-11-16 12:39:37,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016899035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:37,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:39:37,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-16 12:39:37,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422218940] [2022-11-16 12:39:37,072 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:37,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:39:37,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:37,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:39:37,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:39:37,074 INFO L87 Difference]: Start difference. First operand 1914 states and 2574 transitions. Second operand has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:42,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:39:42,957 INFO L93 Difference]: Finished difference Result 2022 states and 2722 transitions. [2022-11-16 12:39:42,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-16 12:39:42,958 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2022-11-16 12:39:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:39:42,964 INFO L225 Difference]: With dead ends: 2022 [2022-11-16 12:39:42,964 INFO L226 Difference]: Without dead ends: 2004 [2022-11-16 12:39:42,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=924, Invalid=1832, Unknown=0, NotChecked=0, Total=2756 [2022-11-16 12:39:42,966 INFO L413 NwaCegarLoop]: 1193 mSDtfsCounter, 296 mSDsluCounter, 15414 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 16607 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:39:42,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 16607 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 12:39:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2022-11-16 12:39:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1950. [2022-11-16 12:39:42,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1950 states, 1390 states have (on average 1.8338129496402877) internal successors, (2549), 1907 states have internal predecessors, (2549), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:39:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2620 transitions. [2022-11-16 12:39:42,999 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2620 transitions. Word has length 98 [2022-11-16 12:39:43,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:39:43,000 INFO L495 AbstractCegarLoop]: Abstraction has 1950 states and 2620 transitions. [2022-11-16 12:39:43,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.857142857142857) internal successors, (108), 28 states have internal predecessors, (108), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:39:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2620 transitions. [2022-11-16 12:39:43,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-16 12:39:43,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:39:43,002 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:39:43,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:39:43,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:43,215 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:39:43,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:43,216 INFO L85 PathProgramCache]: Analyzing trace with hash 2055264534, now seen corresponding path program 4 times [2022-11-16 12:39:43,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:39:43,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260450956] [2022-11-16 12:39:43,217 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:39:43,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:39:43,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:39:43,219 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:39:43,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-16 12:39:43,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:39:43,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:39:43,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 12:39:43,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:39:44,800 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:44,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:39:47,880 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:47,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:39:47,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260450956] [2022-11-16 12:39:47,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260450956] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:39:47,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:39:47,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-16 12:39:47,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023161345] [2022-11-16 12:39:47,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:39:47,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-16 12:39:47,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:39:47,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-16 12:39:47,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2022-11-16 12:39:47,885 INFO L87 Difference]: Start difference. First operand 1950 states and 2620 transitions. Second operand has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:40:03,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:40:03,996 INFO L93 Difference]: Finished difference Result 2156 states and 2890 transitions. [2022-11-16 12:40:03,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-16 12:40:03,998 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 110 [2022-11-16 12:40:03,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:40:04,003 INFO L225 Difference]: With dead ends: 2156 [2022-11-16 12:40:04,004 INFO L226 Difference]: Without dead ends: 2144 [2022-11-16 12:40:04,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1902 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=4121, Invalid=9921, Unknown=0, NotChecked=0, Total=14042 [2022-11-16 12:40:04,008 INFO L413 NwaCegarLoop]: 1215 mSDtfsCounter, 503 mSDsluCounter, 31354 mSDsCounter, 0 mSdLazyCounter, 2469 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 32569 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 2469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:40:04,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 32569 Invalid, 2813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [344 Valid, 2469 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-16 12:40:04,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2144 states. [2022-11-16 12:40:04,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2144 to 2018. [2022-11-16 12:40:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2018 states, 1458 states have (on average 1.8113854595336076) internal successors, (2641), 1975 states have internal predecessors, (2641), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:40:04,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2712 transitions. [2022-11-16 12:40:04,045 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2712 transitions. Word has length 110 [2022-11-16 12:40:04,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:40:04,046 INFO L495 AbstractCegarLoop]: Abstraction has 2018 states and 2712 transitions. [2022-11-16 12:40:04,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.5384615384615383) internal successors, (132), 52 states have internal predecessors, (132), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-16 12:40:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2712 transitions. [2022-11-16 12:40:04,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 12:40:04,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:40:04,050 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:40:04,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-16 12:40:04,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:40:04,275 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:40:04,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:04,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1555511766, now seen corresponding path program 5 times [2022-11-16 12:40:04,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:40:04,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665703667] [2022-11-16 12:40:04,277 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:40:04,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:40:04,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:40:04,279 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:40:04,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-16 12:40:06,219 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-16 12:40:06,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:40:06,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 65 conjunts are in the unsatisfiable core [2022-11-16 12:40:06,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:40:06,279 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:40:06,526 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:40:06,527 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:40:06,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:40:06,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:40:09,903 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:40:09,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:40:09,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:40:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-16 12:40:10,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:40:10,549 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2663 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_2663) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2022-11-16 12:40:10,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:40:10,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665703667] [2022-11-16 12:40:10,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665703667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:40:10,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1869194424] [2022-11-16 12:40:10,553 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 12:40:10,553 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:40:10,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:40:10,559 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:40:10,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-16 12:41:29,179 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2022-11-16 12:41:29,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:41:29,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-16 12:41:29,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:29,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:41:29,634 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:41:29,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:41:29,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:41:29,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:41:32,755 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:41:32,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:41:32,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:41:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-16 12:41:32,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:33,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1869194424] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:33,351 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:41:33,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2022-11-16 12:41:33,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525095245] [2022-11-16 12:41:33,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:41:33,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:41:33,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:41:33,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:41:33,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=217, Unknown=15, NotChecked=30, Total=306 [2022-11-16 12:41:33,354 INFO L87 Difference]: Start difference. First operand 2018 states and 2712 transitions. Second operand has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:41:48,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:41:48,388 INFO L93 Difference]: Finished difference Result 3576 states and 4756 transitions. [2022-11-16 12:41:48,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:41:48,389 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 132 [2022-11-16 12:41:48,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:41:48,396 INFO L225 Difference]: With dead ends: 3576 [2022-11-16 12:41:48,396 INFO L226 Difference]: Without dead ends: 3576 [2022-11-16 12:41:48,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 166 SyntacticMatches, 89 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=98, Invalid=483, Unknown=23, NotChecked=46, Total=650 [2022-11-16 12:41:48,397 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 1799 mSDsluCounter, 8678 mSDsCounter, 0 mSdLazyCounter, 6246 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 9839 SdHoareTripleChecker+Invalid, 12032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 6246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5755 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:41:48,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1804 Valid, 9839 Invalid, 12032 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 6246 Invalid, 0 Unknown, 5755 Unchecked, 14.4s Time] [2022-11-16 12:41:48,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2022-11-16 12:41:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 2015. [2022-11-16 12:41:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 1458 states have (on average 1.8072702331961592) internal successors, (2635), 1972 states have internal predecessors, (2635), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:41:48,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 2706 transitions. [2022-11-16 12:41:48,442 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 2706 transitions. Word has length 132 [2022-11-16 12:41:48,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:41:48,443 INFO L495 AbstractCegarLoop]: Abstraction has 2015 states and 2706 transitions. [2022-11-16 12:41:48,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.083333333333333) internal successors, (85), 12 states have internal predecessors, (85), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 12:41:48,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 2706 transitions. [2022-11-16 12:41:48,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-16 12:41:48,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:41:48,445 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:41:48,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:48,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-16 12:41:48,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:41:48,867 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:41:48,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:41:48,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1555511767, now seen corresponding path program 1 times [2022-11-16 12:41:48,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:41:48,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1396675340] [2022-11-16 12:41:48,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:48,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:41:48,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:41:48,871 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:41:48,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-16 12:41:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:41:50,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 120 conjunts are in the unsatisfiable core [2022-11-16 12:41:50,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:41:50,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:41:50,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:41:50,503 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:41:50,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:41:50,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:41:50,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:41:50,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-11-16 12:41:50,756 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:41:53,714 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3620 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3620) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_3621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3621))) (exists ((v_arrayElimCell_31 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_31)))) is different from true [2022-11-16 12:41:53,784 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:41:53,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:41:53,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:41:53,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 12:41:53,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:41:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:41:53,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:41:55,342 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3712 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3712) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:41:55,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:41:55,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1396675340] [2022-11-16 12:41:55,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1396675340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:41:55,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1799067167] [2022-11-16 12:41:55,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:41:55,351 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:41:55,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:41:55,352 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:41:55,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-16 12:43:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:54,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 118 conjunts are in the unsatisfiable core [2022-11-16 12:43:54,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:54,209 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:43:54,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:43:54,533 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:43:54,534 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:43:54,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:43:54,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:43:54,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-16 12:43:54,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:43:57,540 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4192 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4192) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4191 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4191))) (exists ((v_arrayElimCell_31 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_31)))) is different from true [2022-11-16 12:43:57,610 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:43:57,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:43:57,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:43:57,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-16 12:43:57,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 12:43:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:43:57,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:43:58,921 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4283 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_4283 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4284 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4283) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4284) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:43:58,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1799067167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:43:58,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:43:58,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2022-11-16 12:43:58,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052689657] [2022-11-16 12:43:58,928 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:43:58,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:43:58,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:43:58,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:43:58,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=369, Unknown=5, NotChecked=164, Total=600 [2022-11-16 12:43:58,929 INFO L87 Difference]: Start difference. First operand 2015 states and 2706 transitions. Second operand has 21 states, 18 states have (on average 8.38888888888889) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:43:59,992 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_3620 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3620) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4192 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4192) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_4191 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4191))) (exists ((v_ArrVal_3621 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_3621))) (exists ((v_arrayElimCell_31 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_31)))) is different from true [2022-11-16 12:44:18,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:18,229 INFO L93 Difference]: Finished difference Result 3336 states and 4412 transitions. [2022-11-16 12:44:18,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:44:18,230 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 8.38888888888889) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 132 [2022-11-16 12:44:18,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:18,233 INFO L225 Difference]: With dead ends: 3336 [2022-11-16 12:44:18,233 INFO L226 Difference]: Without dead ends: 3336 [2022-11-16 12:44:18,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 160 SyntacticMatches, 89 SemanticMatches, 31 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 638 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=117, Invalid=653, Unknown=6, NotChecked=280, Total=1056 [2022-11-16 12:44:18,234 INFO L413 NwaCegarLoop]: 1101 mSDtfsCounter, 2958 mSDsluCounter, 6857 mSDsCounter, 0 mSdLazyCounter, 8160 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2963 SdHoareTripleChecker+Valid, 7958 SdHoareTripleChecker+Invalid, 15059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 8160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6862 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:18,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2963 Valid, 7958 Invalid, 15059 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [37 Valid, 8160 Invalid, 0 Unknown, 6862 Unchecked, 18.6s Time] [2022-11-16 12:44:18,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3336 states. [2022-11-16 12:44:18,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3336 to 2014. [2022-11-16 12:44:18,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2014 states, 1458 states have (on average 1.8058984910836762) internal successors, (2633), 1971 states have internal predecessors, (2633), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:44:18,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2704 transitions. [2022-11-16 12:44:18,292 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2704 transitions. Word has length 132 [2022-11-16 12:44:18,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:44:18,293 INFO L495 AbstractCegarLoop]: Abstraction has 2014 states and 2704 transitions. [2022-11-16 12:44:18,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 8.38888888888889) internal successors, (151), 17 states have internal predecessors, (151), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:44:18,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2704 transitions. [2022-11-16 12:44:18,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-16 12:44:18,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:18,295 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:18,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:18,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:18,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:44:18,705 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:44:18,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:18,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1849192087, now seen corresponding path program 1 times [2022-11-16 12:44:18,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:44:18,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130842537] [2022-11-16 12:44:18,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:18,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:44:18,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:44:18,708 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:44:18,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-16 12:44:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:19,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-16 12:44:19,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:19,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:44:20,055 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:44:20,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:44:20,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:44:20,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:44:23,193 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_47 (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_12| (_ BitVec 32))) (and (= (_ bv0 1) (bvadd (select |c_#valid| v_arrayElimCell_47) (_ bv1 1))) (not (= v_arrayElimCell_47 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_12|)) (= (_ bv0 1) (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_12|) (_ bv1 1))))) (exists ((v_ArrVal_4723 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_4723)))) is different from true [2022-11-16 12:44:23,285 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:44:23,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:44:23,473 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:44:23,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:44:23,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:44:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:44:23,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:23,651 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4724 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_4724) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2022-11-16 12:44:23,670 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4724 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4724) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2022-11-16 12:44:24,064 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4770 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4770))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4724)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:44:24,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:44:24,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130842537] [2022-11-16 12:44:24,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130842537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:24,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1456864130] [2022-11-16 12:44:24,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:24,068 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:44:24,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:44:24,070 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:44:24,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2022-11-16 12:44:30,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:30,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-16 12:44:30,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:30,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:44:30,466 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:44:30,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:44:30,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:44:30,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:44:33,301 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:44:33,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:44:33,401 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:44:33,402 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:44:33,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:44:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-16 12:44:33,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:35,573 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5210 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5210) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:44:35,969 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5256 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5210 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5256))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5210)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:44:35,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1456864130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:35,973 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:44:35,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2022-11-16 12:44:35,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155845935] [2022-11-16 12:44:35,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:35,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:44:35,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:44:35,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:44:35,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=250, Unknown=22, NotChecked=222, Total=552 [2022-11-16 12:44:35,975 INFO L87 Difference]: Start difference. First operand 2014 states and 2704 transitions. Second operand has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:44:49,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:44:49,895 INFO L93 Difference]: Finished difference Result 3574 states and 4752 transitions. [2022-11-16 12:44:49,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:44:49,896 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 135 [2022-11-16 12:44:49,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:44:49,899 INFO L225 Difference]: With dead ends: 3574 [2022-11-16 12:44:49,899 INFO L226 Difference]: Without dead ends: 3574 [2022-11-16 12:44:49,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 173 SyntacticMatches, 90 SemanticMatches, 30 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=111, Invalid=533, Unknown=30, NotChecked=318, Total=992 [2022-11-16 12:44:49,900 INFO L413 NwaCegarLoop]: 1160 mSDtfsCounter, 1798 mSDsluCounter, 7908 mSDsCounter, 0 mSdLazyCounter, 5478 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 9068 SdHoareTripleChecker+Invalid, 13710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 5478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8202 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:44:49,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 9068 Invalid, 13710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 5478 Invalid, 0 Unknown, 8202 Unchecked, 13.3s Time] [2022-11-16 12:44:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2022-11-16 12:44:49,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 2013. [2022-11-16 12:44:49,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2013 states, 1458 states have (on average 1.8045267489711934) internal successors, (2631), 1970 states have internal predecessors, (2631), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:44:49,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 2702 transitions. [2022-11-16 12:44:49,936 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 2702 transitions. Word has length 135 [2022-11-16 12:44:49,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:44:49,937 INFO L495 AbstractCegarLoop]: Abstraction has 2013 states and 2702 transitions. [2022-11-16 12:44:49,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.571428571428571) internal successors, (92), 14 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:44:49,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 2702 transitions. [2022-11-16 12:44:49,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-16 12:44:49,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:44:49,939 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:49,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:44:50,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:50,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:44:50,364 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:44:50,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:50,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1849192088, now seen corresponding path program 1 times [2022-11-16 12:44:50,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:44:50,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005221694] [2022-11-16 12:44:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:50,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:44:50,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:44:50,366 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:44:50,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-16 12:44:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:51,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 123 conjunts are in the unsatisfiable core [2022-11-16 12:44:51,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:51,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:44:52,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:44:52,119 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:44:52,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:44:52,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:44:52,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:44:52,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-11-16 12:44:52,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:44:55,366 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5740 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_5740))) (exists ((v_arrayElimCell_59 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_59) (_ bv44 32))) (exists ((v_ArrVal_5741 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_5741) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-16 12:44:55,430 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:44:55,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:44:55,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:44:55,652 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:44:55,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:44:55,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:44:55,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 12:44:55,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:44:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:44:55,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:56,113 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5743 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5743) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:44:56,169 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5743 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_5743) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2022-11-16 12:44:57,399 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5743 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5834))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5835) .cse0 v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5743) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5742 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5835) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5742) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2022-11-16 12:44:57,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:44:57,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005221694] [2022-11-16 12:44:57,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005221694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:57,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2069152866] [2022-11-16 12:44:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:57,410 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:44:57,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:44:57,411 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:44:57,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-16 12:45:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:03,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-16 12:45:03,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:45:03,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:45:03,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:45:04,283 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:45:04,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:45:04,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 12:45:04,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:45:04,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:45:04,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-16 12:45:04,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:45:10,680 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_6277 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_6277))) (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_18| (_ BitVec 32))) (= (select |c_#length| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_18|) (_ bv40 32))) (exists ((|v_ULTIMATE.start_main_#t~mem73#1.base_BEFORE_CALL_10| (_ BitVec 32))) (= (select |c_#length| |v_ULTIMATE.start_main_#t~mem73#1.base_BEFORE_CALL_10|) (_ bv44 32)))) is different from true [2022-11-16 12:45:10,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:45:10,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-16 12:45:11,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:45:11,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 60 [2022-11-16 12:45:11,181 INFO L321 Elim1Store]: treesize reduction 43, result has 17.3 percent of original size [2022-11-16 12:45:11,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 44 [2022-11-16 12:45:11,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-16 12:45:11,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:45:11,571 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:45:11,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:45:12,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 159 [2022-11-16 12:45:15,402 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_77 (_ BitVec 32))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6327))) (let ((.cse2 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (or (forall ((v_ArrVal_6278 (_ BitVec 32))) (let ((.cse0 (select (select (store .cse1 v_arrayElimCell_77 (store (select .cse1 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse2) v_ArrVal_6278)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (not (bvule (bvadd .cse2 (_ bv20 32)) (select |c_#length| v_arrayElimCell_77))))))) (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_arrayElimCell_77 (_ BitVec 32))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6327))) (let ((.cse7 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (.cse5 (select |c_#length| v_arrayElimCell_77))) (or (forall ((v_prenex_6 (_ BitVec 32))) (let ((.cse4 (bvadd (_ bv8 32) (select (select (store .cse6 v_arrayElimCell_77 (store (select .cse6 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse7) v_prenex_6)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))) (or (forall ((v_ArrVal_6279 (_ BitVec 32))) (bvule .cse4 (select |c_#length| v_ArrVal_6279))) (bvule .cse4 .cse5)))) (not (bvule (bvadd .cse7 (_ bv20 32)) .cse5)))))))) is different from false [2022-11-16 12:45:15,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2069152866] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:45:15,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:45:15,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 31 [2022-11-16 12:45:15,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433580507] [2022-11-16 12:45:15,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:45:15,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:45:15,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:45:15,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:45:15,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1023, Unknown=10, NotChecked=414, Total=1560 [2022-11-16 12:45:15,434 INFO L87 Difference]: Start difference. First operand 2013 states and 2702 transitions. Second operand has 32 states, 29 states have (on average 5.827586206896552) internal successors, (169), 26 states have internal predecessors, (169), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:45:54,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:45:54,921 INFO L93 Difference]: Finished difference Result 2868 states and 3816 transitions. [2022-11-16 12:45:54,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:45:54,922 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 5.827586206896552) internal successors, (169), 26 states have internal predecessors, (169), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 135 [2022-11-16 12:45:54,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:45:54,925 INFO L225 Difference]: With dead ends: 2868 [2022-11-16 12:45:54,925 INFO L226 Difference]: Without dead ends: 2868 [2022-11-16 12:45:54,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 160 SyntacticMatches, 87 SemanticMatches, 49 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=216, Invalid=1750, Unknown=38, NotChecked=546, Total=2550 [2022-11-16 12:45:54,927 INFO L413 NwaCegarLoop]: 1290 mSDtfsCounter, 1409 mSDsluCounter, 15389 mSDsCounter, 0 mSdLazyCounter, 14601 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 16679 SdHoareTripleChecker+Invalid, 26338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 14601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11693 IncrementalHoareTripleChecker+Unchecked, 37.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:45:54,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 16679 Invalid, 26338 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [44 Valid, 14601 Invalid, 0 Unknown, 11693 Unchecked, 37.4s Time] [2022-11-16 12:45:54,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2868 states. [2022-11-16 12:45:54,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2868 to 2012. [2022-11-16 12:45:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 1458 states have (on average 1.8031550068587106) internal successors, (2629), 1969 states have internal predecessors, (2629), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:45:54,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 2700 transitions. [2022-11-16 12:45:54,960 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 2700 transitions. Word has length 135 [2022-11-16 12:45:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:45:54,960 INFO L495 AbstractCegarLoop]: Abstraction has 2012 states and 2700 transitions. [2022-11-16 12:45:54,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 5.827586206896552) internal successors, (169), 26 states have internal predecessors, (169), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 12:45:54,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 2700 transitions. [2022-11-16 12:45:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-16 12:45:54,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:45:54,963 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:45:54,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-11-16 12:45:55,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-16 12:45:55,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:45:55,376 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:45:55,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:55,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2031259997, now seen corresponding path program 1 times [2022-11-16 12:45:55,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:45:55,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936424984] [2022-11-16 12:45:55,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:55,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:45:55,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:45:55,378 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:45:55,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-16 12:45:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:56,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-16 12:45:56,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:45:56,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:45:57,115 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:45:57,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:45:57,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:45:57,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:46:00,317 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20| (_ BitVec 32)) (v_arrayElimCell_80 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| v_arrayElimCell_80) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_80 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20|)) (= (_ bv0 1) (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_20|) (_ bv1 1))))) (exists ((v_ArrVal_6781 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_6781)))) is different from true [2022-11-16 12:46:00,407 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:00,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:46:00,581 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:00,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:46:00,738 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:00,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:46:00,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:46:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:46:00,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:46:03,069 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6783) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:46:03,095 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6782 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_6782))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:46:03,112 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6782 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6782))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:46:03,523 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6829 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6782 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6829))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6782)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:46:03,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:46:03,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936424984] [2022-11-16 12:46:03,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936424984] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:46:03,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [298951682] [2022-11-16 12:46:03,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:03,528 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:46:03,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:46:03,532 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:46:03,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-16 12:46:10,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:10,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-16 12:46:10,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:10,495 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:46:10,689 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:46:10,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:46:10,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:46:10,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:46:13,970 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:13,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:46:14,076 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:14,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:46:14,152 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:14,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:46:14,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:46:14,195 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-16 12:46:14,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:46:16,335 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7284))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:46:16,351 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7284))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:46:16,792 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7284 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7331 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7331))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7284)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6783)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:46:16,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [298951682] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:46:16,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:46:16,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2022-11-16 12:46:16,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072566170] [2022-11-16 12:46:16,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:46:16,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 12:46:16,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:46:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 12:46:16,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=279, Unknown=28, NotChecked=328, Total=702 [2022-11-16 12:46:16,799 INFO L87 Difference]: Start difference. First operand 2012 states and 2700 transitions. Second operand has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:46:35,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:46:35,877 INFO L93 Difference]: Finished difference Result 3572 states and 4748 transitions. [2022-11-16 12:46:35,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:46:35,878 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 138 [2022-11-16 12:46:35,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:46:35,882 INFO L225 Difference]: With dead ends: 3572 [2022-11-16 12:46:35,882 INFO L226 Difference]: Without dead ends: 3572 [2022-11-16 12:46:35,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 181 SyntacticMatches, 91 SemanticMatches, 33 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=120, Invalid=578, Unknown=36, NotChecked=456, Total=1190 [2022-11-16 12:46:35,884 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 1792 mSDsluCounter, 8355 mSDsCounter, 0 mSdLazyCounter, 7104 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 9511 SdHoareTripleChecker+Invalid, 12702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 7104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5566 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:46:35,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 9511 Invalid, 12702 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 7104 Invalid, 0 Unknown, 5566 Unchecked, 18.3s Time] [2022-11-16 12:46:35,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2022-11-16 12:46:35,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 2011. [2022-11-16 12:46:35,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 1458 states have (on average 1.8017832647462277) internal successors, (2627), 1968 states have internal predecessors, (2627), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:46:35,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2698 transitions. [2022-11-16 12:46:35,924 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2698 transitions. Word has length 138 [2022-11-16 12:46:35,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:46:35,924 INFO L495 AbstractCegarLoop]: Abstraction has 2011 states and 2698 transitions. [2022-11-16 12:46:35,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:46:35,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2698 transitions. [2022-11-16 12:46:35,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-16 12:46:35,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:46:35,927 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:46:35,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-16 12:46:36,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-16 12:46:36,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:46:36,353 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:46:36,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:46:36,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2031259998, now seen corresponding path program 1 times [2022-11-16 12:46:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:46:36,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061569703] [2022-11-16 12:46:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:36,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:46:36,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:46:36,356 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:46:36,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-16 12:46:37,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:46:37,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 126 conjunts are in the unsatisfiable core [2022-11-16 12:46:37,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:46:37,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:46:38,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:46:38,527 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:46:38,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:46:38,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:46:38,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:46:38,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-11-16 12:46:38,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-16 12:46:41,726 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_94 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_94) (_ bv44 32))) (exists ((v_ArrVal_7830 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7830))) (exists ((v_ArrVal_7831 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7831)))) is different from true [2022-11-16 12:46:41,789 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:41,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:46:41,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:46:42,012 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:42,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:46:42,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:46:42,191 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:46:42,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:46:42,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:46:42,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:46:42,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-16 12:46:42,317 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:46:42,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:46:42,622 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:46:42,660 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2022-11-16 12:46:42,746 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7832))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7833) .cse0 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7833) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32))))))) is different from false [2022-11-16 12:46:42,888 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_7833) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_7832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_7832))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_7833) .cse3 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2022-11-16 12:46:46,037 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7927 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7926 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7926))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7927) .cse1 v_ArrVal_7833) (select (select (store .cse2 .cse1 v_ArrVal_7832) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7834))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7927 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7926 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7835 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7834 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7833 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7832 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7926))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7832))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7927) .cse4 v_ArrVal_7833) .cse5 v_ArrVal_7834) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7835) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2022-11-16 12:46:46,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:46:46,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061569703] [2022-11-16 12:46:46,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061569703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:46:46,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1552001727] [2022-11-16 12:46:46,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:46:46,046 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:46:46,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:46:46,047 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:46:46,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2022-11-16 12:48:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:48:49,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 125 conjunts are in the unsatisfiable core [2022-11-16 12:48:49,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:48:49,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:48:49,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:48:49,751 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:48:49,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:48:49,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:48:49,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:48:50,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-16 12:48:50,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:48:54,137 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_94 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_94) (_ bv44 32))) (exists ((v_ArrVal_8426 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8426))) (exists ((v_ArrVal_8427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8427) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:48:54,223 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:48:54,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:48:54,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:48:54,572 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:48:54,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:48:54,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:48:54,810 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:48:54,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:48:54,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:48:54,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 12:48:54,871 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-16 12:48:54,883 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:48:54,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:48:54,976 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:48:55,015 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2022-11-16 12:48:55,179 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8428) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8429) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8429))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8428) .cse2 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2022-11-16 12:48:55,251 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8429))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8428) .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8428) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8429) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2022-11-16 12:48:56,801 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8523 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8522))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8429))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8523) .cse0 v_ArrVal_8428) .cse1 v_ArrVal_8431) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8430) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8429 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8428 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8523 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8522 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8431 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8522))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8523) .cse6 v_ArrVal_8428) (select (select (store .cse7 .cse6 v_ArrVal_8429) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8431))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd .cse5 (_ bv12 32))))))) is different from false [2022-11-16 12:48:56,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1552001727] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:48:56,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:48:56,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 24 [2022-11-16 12:48:56,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456773296] [2022-11-16 12:48:56,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:48:56,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-16 12:48:56,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:48:56,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-16 12:48:56,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=537, Unknown=13, NotChecked=684, Total=1332 [2022-11-16 12:48:56,813 INFO L87 Difference]: Start difference. First operand 2011 states and 2698 transitions. Second operand has 25 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:48:59,257 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimCell_94 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_94) (_ bv44 32))) (exists ((v_ArrVal_8426 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8426))) (exists ((v_ArrVal_7830 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7830))) (exists ((v_ArrVal_7831 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_7831))) (exists ((v_ArrVal_8427 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8427) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:49:54,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:49:54,525 INFO L93 Difference]: Finished difference Result 3332 states and 4404 transitions. [2022-11-16 12:49:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:49:54,526 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 138 [2022-11-16 12:49:54,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:49:54,530 INFO L225 Difference]: With dead ends: 3332 [2022-11-16 12:49:54,530 INFO L226 Difference]: Without dead ends: 3332 [2022-11-16 12:49:54,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 172 SyntacticMatches, 89 SemanticMatches, 46 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 828 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=180, Invalid=1048, Unknown=14, NotChecked=1014, Total=2256 [2022-11-16 12:49:54,531 INFO L413 NwaCegarLoop]: 1100 mSDtfsCounter, 2879 mSDsluCounter, 10036 mSDsCounter, 0 mSdLazyCounter, 15982 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2884 SdHoareTripleChecker+Valid, 11136 SdHoareTripleChecker+Invalid, 21418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 15982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5400 IncrementalHoareTripleChecker+Unchecked, 56.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:49:54,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2884 Valid, 11136 Invalid, 21418 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [36 Valid, 15982 Invalid, 0 Unknown, 5400 Unchecked, 56.3s Time] [2022-11-16 12:49:54,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2022-11-16 12:49:54,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 2010. [2022-11-16 12:49:54,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1458 states have (on average 1.800411522633745) internal successors, (2625), 1967 states have internal predecessors, (2625), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:49:54,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2696 transitions. [2022-11-16 12:49:54,559 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2696 transitions. Word has length 138 [2022-11-16 12:49:54,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:49:54,560 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 2696 transitions. [2022-11-16 12:49:54,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 7.409090909090909) internal successors, (163), 21 states have internal predecessors, (163), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 12:49:54,560 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2696 transitions. [2022-11-16 12:49:54,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-16 12:49:54,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:49:54,561 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:49:54,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -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 [2022-11-16 12:49:54,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2022-11-16 12:49:54,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:49:54,975 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:49:54,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:49:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1472678910, now seen corresponding path program 1 times [2022-11-16 12:49:54,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:49:54,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219373824] [2022-11-16 12:49:54,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:49:54,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:49:54,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:49:54,979 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:49:55,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-16 12:49:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:49:56,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-16 12:49:56,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:49:56,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:49:57,137 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:49:57,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:49:57,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:49:57,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:50:01,761 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:50:01,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:50:02,031 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:50:02,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:50:02,235 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:50:02,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:50:02,448 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:50:02,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:50:02,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:50:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2022-11-16 12:50:02,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:02,766 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_8995) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2022-11-16 12:50:02,786 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8995) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2022-11-16 12:50:02,817 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8994))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:50:02,841 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:50:02,879 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8993 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8993))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2022-11-16 12:50:02,908 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8993 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8993))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:50:03,498 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8994 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8993 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9041))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8993)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8994)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8995)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:50:03,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:50:03,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219373824] [2022-11-16 12:50:03,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219373824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:50:03,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [838724923] [2022-11-16 12:50:03,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:03,507 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:50:03,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:50:03,509 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:50:03,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2022-11-16 12:50:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:14,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-16 12:50:14,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:14,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:50:15,225 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-16 12:50:15,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-16 12:50:15,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:50:15,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-16 12:50:19,559 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_28| (_ BitVec 32)) (v_arrayElimCell_118 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| v_arrayElimCell_118) (_ bv1 1)) (_ bv0 1)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_28|) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_118 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_28|)))) (exists ((v_ArrVal_9510 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_9510) |c_#memory_$Pointer$.base|))) is different from true [2022-11-16 12:50:19,694 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:50:19,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:50:19,846 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:50:19,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:50:19,950 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:50:19,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:50:20,057 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:50:20,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-16 12:50:20,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-16 12:50:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:50:20,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:50:20,167 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_9513) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:50:20,189 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9513) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-16 12:50:20,221 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9512))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:50:20,247 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9512))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:50:20,528 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9511))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9512)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:50:21,210 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9559 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9513 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9512 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9511 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9559))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9511)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9512)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9513)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-16 12:50:21,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [838724923] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:50:21,218 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:50:21,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2022-11-16 12:50:21,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182124159] [2022-11-16 12:50:21,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:50:21,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:50:21,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-16 12:50:21,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:50:21,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=317, Unknown=35, NotChecked=686, Total=1122 [2022-11-16 12:50:21,220 INFO L87 Difference]: Start difference. First operand 2010 states and 2696 transitions. Second operand has 18 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:50:22,994 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_28| (_ BitVec 32)) (v_arrayElimCell_118 (_ BitVec 32))) (and (= (bvadd (select |c_#valid| v_arrayElimCell_118) (_ bv1 1)) (_ bv0 1)) (= (bvadd (select |c_#valid| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_28|) (_ bv1 1)) (_ bv0 1)) (not (= v_arrayElimCell_118 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_28|)))) (exists ((v_ArrVal_9510 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_9510) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_8992 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_8992)))) is different from true [2022-11-16 12:50:52,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:50:52,471 INFO L93 Difference]: Finished difference Result 3570 states and 4744 transitions. [2022-11-16 12:50:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:50:52,472 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 141 [2022-11-16 12:50:52,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:50:52,478 INFO L225 Difference]: With dead ends: 3570 [2022-11-16 12:50:52,478 INFO L226 Difference]: Without dead ends: 3570 [2022-11-16 12:50:52,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 187 SyntacticMatches, 89 SemanticMatches, 41 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=139, Invalid=633, Unknown=44, NotChecked=990, Total=1806 [2022-11-16 12:50:52,480 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 1795 mSDsluCounter, 11398 mSDsCounter, 0 mSdLazyCounter, 8331 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1800 SdHoareTripleChecker+Valid, 12556 SdHoareTripleChecker+Invalid, 16152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 8331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7789 IncrementalHoareTripleChecker+Unchecked, 30.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:50:52,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1800 Valid, 12556 Invalid, 16152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 8331 Invalid, 0 Unknown, 7789 Unchecked, 30.2s Time] [2022-11-16 12:50:52,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3570 states. [2022-11-16 12:50:52,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3570 to 2009. [2022-11-16 12:50:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2009 states, 1458 states have (on average 1.799039780521262) internal successors, (2623), 1966 states have internal predecessors, (2623), 34 states have call successors, (34), 15 states have call predecessors, (34), 16 states have return successors, (37), 30 states have call predecessors, (37), 34 states have call successors, (37) [2022-11-16 12:50:52,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2694 transitions. [2022-11-16 12:50:52,534 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2694 transitions. Word has length 141 [2022-11-16 12:50:52,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:50:52,535 INFO L495 AbstractCegarLoop]: Abstraction has 2009 states and 2694 transitions. [2022-11-16 12:50:52,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-16 12:50:52,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2694 transitions. [2022-11-16 12:50:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-16 12:50:52,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:50:52,537 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:50:52,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-16 12:50:52,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2022-11-16 12:50:52,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt [2022-11-16 12:50:52,952 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_freeErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2022-11-16 12:50:52,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:50:52,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1472678911, now seen corresponding path program 1 times [2022-11-16 12:50:52,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-16 12:50:52,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386807616] [2022-11-16 12:50:52,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:50:52,953 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 12:50:52,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat [2022-11-16 12:50:52,954 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 12:50:52,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-16 12:50:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:50:54,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 127 conjunts are in the unsatisfiable core [2022-11-16 12:50:54,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:50:54,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 12:50:55,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:50:55,394 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 12:50:55,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 12:50:55,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:50:55,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 12:50:55,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-16 12:50:55,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-11-16 12:51:00,145 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_10074 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_alt_bzero_#in~a#1.base| v_ArrVal_10074))) (exists ((v_ArrVal_10073 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_alt_bzero_#in~a#1.base| v_ArrVal_10073))) (exists ((v_arrayElimCell_134 (_ BitVec 32))) (= (select |c_#length| v_arrayElimCell_134) (_ bv44 32)))) is different from true [2022-11-16 12:51:00,242 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:51:00,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:51:00,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:51:00,539 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:51:00,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:51:00,563 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:51:00,787 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:51:00,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:51:00,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:51:01,029 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-16 12:51:01,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-16 12:51:01,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-16 12:51:01,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-16 12:51:01,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 12:51:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 903 trivial. 44 not checked. [2022-11-16 12:51:01,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:51:01,571 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-11-16 12:51:01,621 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv20 32)) (bvadd .cse2 (_ bv24 32)))))))) is different from false [2022-11-16 12:51:01,779 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10078))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10077) .cse0 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10077) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10078) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv20 32)) (bvadd .cse3 (_ bv24 32))))))) is different from false [2022-11-16 12:51:01,917 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_10077) (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_10078) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_10078))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_10077) .cse3 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2022-11-16 12:51:02,734 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10075))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_10078))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10076) .cse0 v_ArrVal_10077) .cse1 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_10076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10075))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10076) .cse6 v_ArrVal_10077) (select (select (store .cse7 .cse6 v_ArrVal_10078) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10079))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv20 32)) (bvadd .cse5 (_ bv24 32))))))) is different from false [2022-11-16 12:51:04,749 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_10076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_10075))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_10076) .cse2 v_ArrVal_10077) (select (select (store .cse3 .cse2 v_ArrVal_10078) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_10079))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_10076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_10075))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_10078))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_10076) .cse5 v_ArrVal_10077) .cse6 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2022-11-16 12:51:07,080 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10080 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10171 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10172 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10171))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_10075))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_10078))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10172) .cse0 v_ArrVal_10076) .cse1 v_ArrVal_10077) .cse2 v_ArrVal_10079) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_10080) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_10076 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10077 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10078 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10079 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10171 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10172 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10171))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_10075))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10172) .cse8 v_ArrVal_10076) .cse9 v_ArrVal_10077) (select (select (store .cse10 .cse9 v_ArrVal_10078) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_10079))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse7 (_ bv20 32)) (bvadd .cse7 (_ bv24 32))))))) is different from false [2022-11-16 12:51:07,099 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-16 12:51:07,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386807616] [2022-11-16 12:51:07,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386807616] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:51:07,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1744269516] [2022-11-16 12:51:07,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:51:07,100 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 12:51:07,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 [2022-11-16 12:51:07,105 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 12:51:07,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb4f84d1-0a5f-4cf1-b296-859fbec8809c/bin/uautomizer-tPACEb0tL8/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process