./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5237d83 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_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a --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 c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e --- 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-b5237d8 [2022-11-21 13:46:54,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:46:54,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:46:54,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:46:54,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:46:54,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:46:54,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:46:54,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:46:54,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:46:54,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:46:54,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:46:54,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:46:54,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:46:54,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:46:54,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:46:54,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:46:54,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:46:54,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:46:54,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:46:54,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:46:54,737 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:46:54,738 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:46:54,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:46:54,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:46:54,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:46:54,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:46:54,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:46:54,745 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:46:54,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:46:54,746 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:46:54,747 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:46:54,748 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:46:54,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:46:54,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:46:54,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:46:54,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:46:54,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:46:54,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:46:54,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:46:54,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:46:54,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:46:54,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-21 13:46:54,774 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:46:54,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:46:54,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:46:54,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:46:54,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:46:54,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:46:54,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:46:54,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:46:54,777 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:46:54,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:46:54,778 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:46:54,778 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:46:54,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:46:54,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:46:54,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:46:54,778 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 13:46:54,779 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 13:46:54,779 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 13:46:54,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:46:54,779 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 13:46:54,779 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:46:54,779 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:46:54,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:46:54,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:46:54,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:46:54,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:46:54,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:46:54,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:46:54,781 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:46:54,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:46:54,781 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_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e [2022-11-21 13:46:55,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:46:55,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:46:55,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:46:55,056 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:46:55,058 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:46:55,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-11-21 13:46:58,170 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:46:58,405 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:46:58,406 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-11-21 13:46:58,413 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/data/f44f58f51/0f2e70caa7dc4e7eb45c652505de42b4/FLAG93f4a5f90 [2022-11-21 13:46:58,428 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/data/f44f58f51/0f2e70caa7dc4e7eb45c652505de42b4 [2022-11-21 13:46:58,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:46:58,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:46:58,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:46:58,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:46:58,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:46:58,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:58" (1/1) ... [2022-11-21 13:46:58,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d365b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:58, skipping insertion in model container [2022-11-21 13:46:58,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:46:58" (1/1) ... [2022-11-21 13:46:58,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:46:58,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:46:58,648 WARN L237 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_22d94829-a3df-466d-8562-c3a68a386fd1/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-11-21 13:46:58,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:46:58,675 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) [2022-11-21 13:46:58,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7fd3fcf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:46:58, skipping insertion in model container [2022-11-21 13:46:58,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:46:58,676 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-21 13:46:58,678 INFO L158 Benchmark]: Toolchain (without parser) took 245.29ms. Allocated memory is still 144.7MB. Free memory was 114.3MB in the beginning and 104.7MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 13:46:58,679 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 67.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:46:58,679 INFO L158 Benchmark]: CACSL2BoogieTranslator took 242.86ms. Allocated memory is still 144.7MB. Free memory was 114.3MB in the beginning and 104.7MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 13:46:58,680 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 67.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 242.86ms. Allocated memory is still 144.7MB. Free memory was 114.3MB in the beginning and 104.7MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: 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_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a --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 c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e --- 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-b5237d8 [2022-11-21 13:47:01,048 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:47:01,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:47:01,081 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:47:01,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:47:01,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:47:01,084 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:47:01,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:47:01,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:47:01,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:47:01,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:47:01,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:47:01,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:47:01,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:47:01,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:47:01,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:47:01,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:47:01,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:47:01,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:47:01,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:47:01,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:47:01,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:47:01,111 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:47:01,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:47:01,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:47:01,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:47:01,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:47:01,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:47:01,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:47:01,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:47:01,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:47:01,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:47:01,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:47:01,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:47:01,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:47:01,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:47:01,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:47:01,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:47:01,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:47:01,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:47:01,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:47:01,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-21 13:47:01,167 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:47:01,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:47:01,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:47:01,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:47:01,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:47:01,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:47:01,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:47:01,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:47:01,179 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:47:01,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:47:01,180 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:47:01,180 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 13:47:01,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:47:01,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:47:01,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:47:01,181 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-21 13:47:01,182 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-21 13:47:01,182 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-21 13:47:01,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:47:01,182 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 13:47:01,183 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 13:47:01,183 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 13:47:01,183 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:47:01,183 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:47:01,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:47:01,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:47:01,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:47:01,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:47:01,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:47:01,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:47:01,186 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 13:47:01,186 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 13:47:01,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 13:47:01,187 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_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e [2022-11-21 13:47:01,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:47:01,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:47:01,586 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:47:01,588 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:47:01,595 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:47:01,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-11-21 13:47:04,835 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:47:05,085 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:47:05,085 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/sv-benchmarks/c/weaver/unroll-5.wvr.c [2022-11-21 13:47:05,094 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/data/cd6937888/a7858f3d8da549539bec5da05737462c/FLAG74db85e2b [2022-11-21 13:47:05,106 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/data/cd6937888/a7858f3d8da549539bec5da05737462c [2022-11-21 13:47:05,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:47:05,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:47:05,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:47:05,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:47:05,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:47:05,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:47:05" (1/1) ... [2022-11-21 13:47:05,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9547b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05, skipping insertion in model container [2022-11-21 13:47:05,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:47:05" (1/1) ... [2022-11-21 13:47:05,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:47:05,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:47:05,355 WARN L237 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_22d94829-a3df-466d-8562-c3a68a386fd1/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-11-21 13:47:05,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:47:05,399 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-21 13:47:05,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:47:05,441 WARN L237 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_22d94829-a3df-466d-8562-c3a68a386fd1/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-11-21 13:47:05,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:47:05,456 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:47:05,501 WARN L237 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_22d94829-a3df-466d-8562-c3a68a386fd1/sv-benchmarks/c/weaver/unroll-5.wvr.c[2644,2657] [2022-11-21 13:47:05,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:47:05,548 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:47:05,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05 WrapperNode [2022-11-21 13:47:05,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:47:05,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:47:05,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:47:05,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:47:05,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05" (1/1) ... [2022-11-21 13:47:05,583 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05" (1/1) ... [2022-11-21 13:47:05,627 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 162 [2022-11-21 13:47:05,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:47:05,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:47:05,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:47:05,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:47:05,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05" (1/1) ... [2022-11-21 13:47:05,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05" (1/1) ... [2022-11-21 13:47:05,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05" (1/1) ... [2022-11-21 13:47:05,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05" (1/1) ... [2022-11-21 13:47:05,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05" (1/1) ... [2022-11-21 13:47:05,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05" (1/1) ... [2022-11-21 13:47:05,703 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05" (1/1) ... [2022-11-21 13:47:05,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05" (1/1) ... [2022-11-21 13:47:05,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:47:05,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:47:05,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:47:05,718 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:47:05,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05" (1/1) ... [2022-11-21 13:47:05,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:47:05,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:05,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:47:05,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:47:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:47:05,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 13:47:05,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:47:05,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-21 13:47:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 13:47:05,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 13:47:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 13:47:05,821 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 13:47:05,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 13:47:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:47:05,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:47:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:47:05,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-21 13:47:05,824 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:47:05,979 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:47:05,981 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:47:06,665 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:47:06,675 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:47:06,675 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 13:47:06,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:06 BoogieIcfgContainer [2022-11-21 13:47:06,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:47:06,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:47:06,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:47:06,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:47:06,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:47:05" (1/3) ... [2022-11-21 13:47:06,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c821009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:47:06, skipping insertion in model container [2022-11-21 13:47:06,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:05" (2/3) ... [2022-11-21 13:47:06,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c821009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:47:06, skipping insertion in model container [2022-11-21 13:47:06,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:06" (3/3) ... [2022-11-21 13:47:06,687 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2022-11-21 13:47:06,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:47:06,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-21 13:47:06,707 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:47:06,848 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-21 13:47:06,886 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-21 13:47:06,901 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 227 places, 237 transitions, 490 flow [2022-11-21 13:47:06,904 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 227 places, 237 transitions, 490 flow [2022-11-21 13:47:06,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 237 transitions, 490 flow [2022-11-21 13:47:07,086 INFO L130 PetriNetUnfolder]: 17/235 cut-off events. [2022-11-21 13:47:07,086 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-21 13:47:07,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 235 events. 17/235 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 283 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2022-11-21 13:47:07,101 INFO L119 LiptonReduction]: Number of co-enabled transitions 6076 [2022-11-21 13:47:58,417 INFO L134 LiptonReduction]: Checked pairs total: 6028 [2022-11-21 13:47:58,418 INFO L136 LiptonReduction]: Total number of compositions: 286 [2022-11-21 13:47:58,425 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 43 transitions, 102 flow [2022-11-21 13:47:58,466 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 342 states, 210 states have (on average 4.142857142857143) internal successors, (870), 341 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:47:58,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:47:58,491 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;@de8e390, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:47:58,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-21 13:47:58,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 342 states, 210 states have (on average 4.142857142857143) internal successors, (870), 341 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:47:58,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 13:47:58,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:58,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 13:47:58,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:47:58,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:58,507 INFO L85 PathProgramCache]: Analyzing trace with hash 30613, now seen corresponding path program 1 times [2022-11-21 13:47:58,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:47:58,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858688973] [2022-11-21 13:47:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:58,525 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 [2022-11-21 13:47:58,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:47:58,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:47:58,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:47:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:58,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 13:47:58,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:58,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:47:58,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:47:58,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858688973] [2022-11-21 13:47:58,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858688973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:58,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:58,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:47:58,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647569925] [2022-11-21 13:47:58,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:58,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:47:58,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:47:58,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:47:58,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:47:58,818 INFO L87 Difference]: Start difference. First operand has 342 states, 210 states have (on average 4.142857142857143) internal successors, (870), 341 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:47:59,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:59,263 INFO L93 Difference]: Finished difference Result 248 states and 620 transitions. [2022-11-21 13:47:59,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:47:59,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-21 13:47:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:59,277 INFO L225 Difference]: With dead ends: 248 [2022-11-21 13:47:59,277 INFO L226 Difference]: Without dead ends: 248 [2022-11-21 13:47:59,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:47:59,281 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:59,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 4 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:47:59,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-21 13:47:59,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 246. [2022-11-21 13:47:59,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 159 states have (on average 3.89937106918239) internal successors, (620), 245 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:47:59,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 620 transitions. [2022-11-21 13:47:59,354 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 620 transitions. Word has length 2 [2022-11-21 13:47:59,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:59,354 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 620 transitions. [2022-11-21 13:47:59,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:47:59,355 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 620 transitions. [2022-11-21 13:47:59,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 13:47:59,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:59,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 13:47:59,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:47:59,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:47:59,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:47:59,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:59,584 INFO L85 PathProgramCache]: Analyzing trace with hash 30414, now seen corresponding path program 1 times [2022-11-21 13:47:59,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:47:59,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171442952] [2022-11-21 13:47:59,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:59,585 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 [2022-11-21 13:47:59,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:47:59,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:47:59,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:47:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:59,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 13:47:59,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:59,774 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 13:47:59,775 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 13:47:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:59,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:47:59,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:47:59,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171442952] [2022-11-21 13:47:59,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171442952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:59,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:59,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:47:59,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73622254] [2022-11-21 13:47:59,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:59,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:47:59,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:47:59,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:47:59,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:47:59,809 INFO L87 Difference]: Start difference. First operand 246 states and 620 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:00,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:00,160 INFO L93 Difference]: Finished difference Result 245 states and 618 transitions. [2022-11-21 13:48:00,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:48:00,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-21 13:48:00,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:00,163 INFO L225 Difference]: With dead ends: 245 [2022-11-21 13:48:00,164 INFO L226 Difference]: Without dead ends: 245 [2022-11-21 13:48:00,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:48:00,165 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:00,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:48:00,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-21 13:48:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2022-11-21 13:48:00,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 159 states have (on average 3.8867924528301887) internal successors, (618), 244 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 618 transitions. [2022-11-21 13:48:00,205 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 618 transitions. Word has length 2 [2022-11-21 13:48:00,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:00,206 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 618 transitions. [2022-11-21 13:48:00,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 618 transitions. [2022-11-21 13:48:00,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-11-21 13:48:00,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:00,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-11-21 13:48:00,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:00,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:00,425 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:00,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:00,426 INFO L85 PathProgramCache]: Analyzing trace with hash 30415, now seen corresponding path program 1 times [2022-11-21 13:48:00,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:00,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492969365] [2022-11-21 13:48:00,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:00,427 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 [2022-11-21 13:48:00,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:00,429 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:00,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:00,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 13:48:00,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:00,622 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 13:48:00,622 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 13:48:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:00,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:48:00,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:00,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492969365] [2022-11-21 13:48:00,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492969365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:00,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:00,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:48:00,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860075458] [2022-11-21 13:48:00,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:00,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:48:00,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:00,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:48:00,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:48:00,661 INFO L87 Difference]: Start difference. First operand 245 states and 618 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:01,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:01,069 INFO L93 Difference]: Finished difference Result 245 states and 617 transitions. [2022-11-21 13:48:01,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:48:01,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2022-11-21 13:48:01,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:01,072 INFO L225 Difference]: With dead ends: 245 [2022-11-21 13:48:01,072 INFO L226 Difference]: Without dead ends: 245 [2022-11-21 13:48:01,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:48:01,073 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:01,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:48:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-21 13:48:01,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2022-11-21 13:48:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 159 states have (on average 3.880503144654088) internal successors, (617), 244 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 617 transitions. [2022-11-21 13:48:01,109 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 617 transitions. Word has length 2 [2022-11-21 13:48:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:01,110 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 617 transitions. [2022-11-21 13:48:01,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 617 transitions. [2022-11-21 13:48:01,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 13:48:01,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:01,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 13:48:01,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:01,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:01,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:01,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:01,323 INFO L85 PathProgramCache]: Analyzing trace with hash 947872, now seen corresponding path program 1 times [2022-11-21 13:48:01,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:01,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96763892] [2022-11-21 13:48:01,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:01,324 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 [2022-11-21 13:48:01,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:01,327 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:01,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:01,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:48:01,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:01,490 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2022-11-21 13:48:01,490 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 3 case distinctions, treesize of input 22 treesize of output 33 [2022-11-21 13:48:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:01,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:48:01,556 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:01,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96763892] [2022-11-21 13:48:01,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96763892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:01,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:01,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:48:01,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479048564] [2022-11-21 13:48:01,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:01,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:48:01,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:01,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:48:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:48:01,561 INFO L87 Difference]: Start difference. First operand 245 states and 617 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:01,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:01,911 INFO L93 Difference]: Finished difference Result 199 states and 481 transitions. [2022-11-21 13:48:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:48:01,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 13:48:01,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:01,918 INFO L225 Difference]: With dead ends: 199 [2022-11-21 13:48:01,918 INFO L226 Difference]: Without dead ends: 199 [2022-11-21 13:48:01,919 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 [2022-11-21 13:48:01,920 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:01,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:48:01,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-21 13:48:01,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-11-21 13:48:01,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 135 states have (on average 3.562962962962963) internal successors, (481), 198 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:01,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 481 transitions. [2022-11-21 13:48:01,946 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 481 transitions. Word has length 3 [2022-11-21 13:48:01,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:01,946 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 481 transitions. [2022-11-21 13:48:01,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:01,947 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 481 transitions. [2022-11-21 13:48:01,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 13:48:01,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:01,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 13:48:01,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:02,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:02,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:02,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:02,162 INFO L85 PathProgramCache]: Analyzing trace with hash 947873, now seen corresponding path program 1 times [2022-11-21 13:48:02,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:02,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912617142] [2022-11-21 13:48:02,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:02,163 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 [2022-11-21 13:48:02,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:02,164 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:02,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:02,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 13:48:02,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:02,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:48:02,334 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2022-11-21 13:48:02,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 14 treesize of output 26 [2022-11-21 13:48:02,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-21 13:48:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:02,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:48:02,453 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:02,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912617142] [2022-11-21 13:48:02,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912617142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:02,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:02,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:48:02,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130709585] [2022-11-21 13:48:02,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:02,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:48:02,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:02,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:48:02,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:48:02,455 INFO L87 Difference]: Start difference. First operand 199 states and 481 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:02,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:02,790 INFO L93 Difference]: Finished difference Result 153 states and 345 transitions. [2022-11-21 13:48:02,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:48:02,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 13:48:02,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:02,793 INFO L225 Difference]: With dead ends: 153 [2022-11-21 13:48:02,793 INFO L226 Difference]: Without dead ends: 153 [2022-11-21 13:48:02,793 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 [2022-11-21 13:48:02,794 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 28 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:02,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:48:02,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-21 13:48:02,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-11-21 13:48:02,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 111 states have (on average 3.108108108108108) internal successors, (345), 152 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 345 transitions. [2022-11-21 13:48:02,806 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 345 transitions. Word has length 3 [2022-11-21 13:48:02,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:02,807 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 345 transitions. [2022-11-21 13:48:02,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:02,808 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 345 transitions. [2022-11-21 13:48:02,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-21 13:48:02,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:02,809 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-21 13:48:02,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:03,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:03,021 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:03,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:03,022 INFO L85 PathProgramCache]: Analyzing trace with hash 947674, now seen corresponding path program 1 times [2022-11-21 13:48:03,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:03,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105588453] [2022-11-21 13:48:03,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:03,022 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 [2022-11-21 13:48:03,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:03,024 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:03,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:03,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:03,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 13:48:03,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:03,181 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 13:48:03,182 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 13:48:03,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:03,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:03,511 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:03,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105588453] [2022-11-21 13:48:03,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105588453] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:48:03,512 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:48:03,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-21 13:48:03,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557116227] [2022-11-21 13:48:03,512 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:48:03,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:48:03,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:03,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:48:03,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:48:03,513 INFO L87 Difference]: Start difference. First operand 153 states and 345 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:04,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:04,481 INFO L93 Difference]: Finished difference Result 305 states and 691 transitions. [2022-11-21 13:48:04,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:48:04,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-21 13:48:04,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:04,484 INFO L225 Difference]: With dead ends: 305 [2022-11-21 13:48:04,484 INFO L226 Difference]: Without dead ends: 305 [2022-11-21 13:48:04,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-11-21 13:48:04,485 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 109 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:04,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 6 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 13:48:04,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-21 13:48:04,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 156. [2022-11-21 13:48:04,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 114 states have (on average 3.0789473684210527) internal successors, (351), 155 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:04,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 351 transitions. [2022-11-21 13:48:04,499 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 351 transitions. Word has length 3 [2022-11-21 13:48:04,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:04,499 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 351 transitions. [2022-11-21 13:48:04,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:04,500 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 351 transitions. [2022-11-21 13:48:04,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 13:48:04,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:04,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 13:48:04,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:04,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:04,714 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:04,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:04,714 INFO L85 PathProgramCache]: Analyzing trace with hash 910925130, now seen corresponding path program 1 times [2022-11-21 13:48:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:04,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753386079] [2022-11-21 13:48:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:04,715 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 [2022-11-21 13:48:04,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:04,717 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:04,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:04,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 13:48:04,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:04,905 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 13:48:04,905 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 13:48:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:05,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:05,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:05,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753386079] [2022-11-21 13:48:05,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753386079] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:48:05,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:48:05,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-21 13:48:05,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415691395] [2022-11-21 13:48:05,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:48:05,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:48:05,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:05,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:48:05,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:48:05,399 INFO L87 Difference]: Start difference. First operand 156 states and 351 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:06,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:06,220 INFO L93 Difference]: Finished difference Result 277 states and 635 transitions. [2022-11-21 13:48:06,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:48:06,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 13:48:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:06,223 INFO L225 Difference]: With dead ends: 277 [2022-11-21 13:48:06,223 INFO L226 Difference]: Without dead ends: 277 [2022-11-21 13:48:06,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:48:06,224 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 80 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:06,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 6 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 13:48:06,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-21 13:48:06,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 142. [2022-11-21 13:48:06,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 110 states have (on average 2.9363636363636365) internal successors, (323), 141 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:06,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 323 transitions. [2022-11-21 13:48:06,232 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 323 transitions. Word has length 5 [2022-11-21 13:48:06,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:06,233 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 323 transitions. [2022-11-21 13:48:06,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:06,233 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 323 transitions. [2022-11-21 13:48:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 13:48:06,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:06,234 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 13:48:06,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:06,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:06,451 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:06,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:06,452 INFO L85 PathProgramCache]: Analyzing trace with hash 910925131, now seen corresponding path program 1 times [2022-11-21 13:48:06,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:06,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540028638] [2022-11-21 13:48:06,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:06,453 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 [2022-11-21 13:48:06,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:06,454 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:06,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:06,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:48:06,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:06,617 INFO L321 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2022-11-21 13:48:06,618 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 2 case distinctions, treesize of input 12 treesize of output 29 [2022-11-21 13:48:06,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:06,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:48:06,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:06,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540028638] [2022-11-21 13:48:06,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540028638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:06,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:06,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:48:06,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098609826] [2022-11-21 13:48:06,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:06,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:48:06,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:06,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:48:06,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:48:06,652 INFO L87 Difference]: Start difference. First operand 142 states and 323 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:06,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:06,907 INFO L93 Difference]: Finished difference Result 128 states and 295 transitions. [2022-11-21 13:48:06,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:48:06,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 13:48:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:06,909 INFO L225 Difference]: With dead ends: 128 [2022-11-21 13:48:06,909 INFO L226 Difference]: Without dead ends: 128 [2022-11-21 13:48:06,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:48:06,910 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 22 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:06,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:48:06,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-21 13:48:06,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2022-11-21 13:48:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 106 states have (on average 2.7830188679245285) internal successors, (295), 127 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:06,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 295 transitions. [2022-11-21 13:48:06,923 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 295 transitions. Word has length 5 [2022-11-21 13:48:06,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:06,924 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 295 transitions. [2022-11-21 13:48:06,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:06,924 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 295 transitions. [2022-11-21 13:48:06,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 13:48:06,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:06,925 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1] [2022-11-21 13:48:06,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:07,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:07,144 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:07,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:07,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1827839601, now seen corresponding path program 2 times [2022-11-21 13:48:07,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:07,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783524137] [2022-11-21 13:48:07,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:48:07,145 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 [2022-11-21 13:48:07,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:07,146 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:07,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:07,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:48:07,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:48:07,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-21 13:48:07,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:07,319 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 13:48:07,319 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 13:48:07,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:07,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:08,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:08,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783524137] [2022-11-21 13:48:08,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783524137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:48:08,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:48:08,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-21 13:48:08,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547719596] [2022-11-21 13:48:08,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:48:08,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 13:48:08,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:08,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 13:48:08,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:48:08,275 INFO L87 Difference]: Start difference. First operand 128 states and 295 transitions. Second operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:13,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:13,751 INFO L93 Difference]: Finished difference Result 1102 states and 2579 transitions. [2022-11-21 13:48:13,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 13:48:13,752 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 13:48:13,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:13,758 INFO L225 Difference]: With dead ends: 1102 [2022-11-21 13:48:13,759 INFO L226 Difference]: Without dead ends: 1102 [2022-11-21 13:48:13,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:48:13,760 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 713 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:13,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 48 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-21 13:48:13,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2022-11-21 13:48:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 134. [2022-11-21 13:48:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 112 states have (on average 2.7410714285714284) internal successors, (307), 133 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 307 transitions. [2022-11-21 13:48:13,773 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 307 transitions. Word has length 6 [2022-11-21 13:48:13,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:13,774 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 307 transitions. [2022-11-21 13:48:13,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:13,774 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 307 transitions. [2022-11-21 13:48:13,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 13:48:13,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:13,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:48:13,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:13,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:13,986 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:13,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:13,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1826100846, now seen corresponding path program 1 times [2022-11-21 13:48:13,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:13,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746228516] [2022-11-21 13:48:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:13,988 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 [2022-11-21 13:48:13,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:13,989 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:13,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:14,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 13:48:14,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:14,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:14,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2022-11-21 13:48:14,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:14,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:14,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746228516] [2022-11-21 13:48:14,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746228516] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:48:14,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:48:14,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-21 13:48:14,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618276115] [2022-11-21 13:48:14,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:48:14,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:48:14,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:14,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:48:14,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:48:14,457 INFO L87 Difference]: Start difference. First operand 134 states and 307 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:15,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:15,720 INFO L93 Difference]: Finished difference Result 315 states and 727 transitions. [2022-11-21 13:48:15,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:48:15,721 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 13:48:15,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:15,723 INFO L225 Difference]: With dead ends: 315 [2022-11-21 13:48:15,723 INFO L226 Difference]: Without dead ends: 315 [2022-11-21 13:48:15,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:48:15,724 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 146 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:15,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 9 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 13:48:15,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-21 13:48:15,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 154. [2022-11-21 13:48:15,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 132 states have (on average 3.0) internal successors, (396), 153 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:15,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 396 transitions. [2022-11-21 13:48:15,731 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 396 transitions. Word has length 6 [2022-11-21 13:48:15,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:15,732 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 396 transitions. [2022-11-21 13:48:15,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:15,732 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 396 transitions. [2022-11-21 13:48:15,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 13:48:15,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:15,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:48:15,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:15,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:15,945 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:15,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:15,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1826100845, now seen corresponding path program 1 times [2022-11-21 13:48:15,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:15,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163252646] [2022-11-21 13:48:15,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:15,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:15,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:15,947 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:15,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:16,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:16,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:48:16,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:16,061 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-11-21 13:48:16,062 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-11-21 13:48:16,086 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:16,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:48:16,086 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:16,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163252646] [2022-11-21 13:48:16,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163252646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:16,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:16,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:48:16,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238503415] [2022-11-21 13:48:16,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:16,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:48:16,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:16,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:48:16,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:48:16,088 INFO L87 Difference]: Start difference. First operand 154 states and 396 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:16,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:16,357 INFO L93 Difference]: Finished difference Result 122 states and 296 transitions. [2022-11-21 13:48:16,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:48:16,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-21 13:48:16,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:16,358 INFO L225 Difference]: With dead ends: 122 [2022-11-21 13:48:16,358 INFO L226 Difference]: Without dead ends: 122 [2022-11-21 13:48:16,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:48:16,359 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:16,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:48:16,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-21 13:48:16,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2022-11-21 13:48:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 109 states have (on average 2.7155963302752295) internal successors, (296), 121 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 296 transitions. [2022-11-21 13:48:16,364 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 296 transitions. Word has length 6 [2022-11-21 13:48:16,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:16,364 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 296 transitions. [2022-11-21 13:48:16,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 296 transitions. [2022-11-21 13:48:16,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 13:48:16,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:16,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:16,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-21 13:48:16,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:16,566 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:16,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:16,566 INFO L85 PathProgramCache]: Analyzing trace with hash -774549859, now seen corresponding path program 1 times [2022-11-21 13:48:16,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:16,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272439665] [2022-11-21 13:48:16,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:16,567 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 [2022-11-21 13:48:16,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:16,567 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:16,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:16,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:16,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-21 13:48:16,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:16,738 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 13:48:16,739 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 13:48:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:16,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:17,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:17,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272439665] [2022-11-21 13:48:17,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272439665] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:48:17,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:48:17,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2022-11-21 13:48:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113457235] [2022-11-21 13:48:17,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:48:17,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:48:17,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:48:17,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:48:17,658 INFO L87 Difference]: Start difference. First operand 122 states and 296 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:22,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:22,361 INFO L93 Difference]: Finished difference Result 204 states and 494 transitions. [2022-11-21 13:48:22,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:48:22,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-21 13:48:22,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:22,367 INFO L225 Difference]: With dead ends: 204 [2022-11-21 13:48:22,367 INFO L226 Difference]: Without dead ends: 204 [2022-11-21 13:48:22,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:48:22,367 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 118 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:22,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 12 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-21 13:48:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-21 13:48:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 149. [2022-11-21 13:48:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 136 states have (on average 2.6691176470588234) internal successors, (363), 148 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 363 transitions. [2022-11-21 13:48:22,373 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 363 transitions. Word has length 7 [2022-11-21 13:48:22,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:22,374 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 363 transitions. [2022-11-21 13:48:22,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:22,374 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 363 transitions. [2022-11-21 13:48:22,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-21 13:48:22,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:22,375 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:22,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:22,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:22,588 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:22,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:22,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1352837166, now seen corresponding path program 2 times [2022-11-21 13:48:22,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:22,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319066594] [2022-11-21 13:48:22,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:48:22,589 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 [2022-11-21 13:48:22,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:22,590 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:22,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:22,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:48:22,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:48:22,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-21 13:48:22,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:22,766 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 13:48:22,767 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 13:48:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:48:22,937 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:48:22,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:22,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319066594] [2022-11-21 13:48:22,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319066594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:22,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:22,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:48:22,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666222283] [2022-11-21 13:48:22,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:22,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:48:22,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:22,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:48:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:48:22,940 INFO L87 Difference]: Start difference. First operand 149 states and 363 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:23,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:23,279 INFO L93 Difference]: Finished difference Result 81 states and 189 transitions. [2022-11-21 13:48:23,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:48:23,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-21 13:48:23,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:23,281 INFO L225 Difference]: With dead ends: 81 [2022-11-21 13:48:23,281 INFO L226 Difference]: Without dead ends: 81 [2022-11-21 13:48:23,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:48:23,282 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:23,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:48:23,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-21 13:48:23,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 46. [2022-11-21 13:48:23,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 44 states have (on average 2.159090909090909) internal successors, (95), 45 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:23,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 95 transitions. [2022-11-21 13:48:23,285 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 95 transitions. Word has length 10 [2022-11-21 13:48:23,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:23,286 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 95 transitions. [2022-11-21 13:48:23,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:23,286 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 95 transitions. [2022-11-21 13:48:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-21 13:48:23,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:23,287 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1] [2022-11-21 13:48:23,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:23,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:23,499 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:23,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:23,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1042247087, now seen corresponding path program 3 times [2022-11-21 13:48:23,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:23,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570168309] [2022-11-21 13:48:23,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:48:23,500 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 [2022-11-21 13:48:23,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:23,502 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:23,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:23,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-21 13:48:23,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:48:23,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-21 13:48:23,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:23,784 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-11-21 13:48:23,785 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-11-21 13:48:24,291 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:24,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:48:27,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:27,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570168309] [2022-11-21 13:48:27,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570168309] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:48:27,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:48:27,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2022-11-21 13:48:27,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995043987] [2022-11-21 13:48:27,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:48:27,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-21 13:48:27,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:27,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-21 13:48:27,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2022-11-21 13:48:27,417 INFO L87 Difference]: Start difference. First operand 46 states and 95 transitions. Second operand has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:47,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:47,706 INFO L93 Difference]: Finished difference Result 718 states and 1559 transitions. [2022-11-21 13:48:47,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 13:48:47,707 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-21 13:48:47,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:47,710 INFO L225 Difference]: With dead ends: 718 [2022-11-21 13:48:47,711 INFO L226 Difference]: Without dead ends: 718 [2022-11-21 13:48:47,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2022-11-21 13:48:47,712 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 1605 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:47,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 240 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-21 13:48:47,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-11-21 13:48:47,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 58. [2022-11-21 13:48:47,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 56 states have (on average 2.125) internal successors, (119), 57 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 119 transitions. [2022-11-21 13:48:47,720 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 119 transitions. Word has length 12 [2022-11-21 13:48:47,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:47,720 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 119 transitions. [2022-11-21 13:48:47,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:47,721 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 119 transitions. [2022-11-21 13:48:47,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 13:48:47,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:47,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:47,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-21 13:48:47,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:47,934 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:47,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:47,935 INFO L85 PathProgramCache]: Analyzing trace with hash 810245392, now seen corresponding path program 1 times [2022-11-21 13:48:47,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:47,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897710750] [2022-11-21 13:48:47,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:47,935 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 [2022-11-21 13:48:47,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:47,937 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:47,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:48,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:48:48,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:48,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:48:48,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:48,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897710750] [2022-11-21 13:48:48,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897710750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:48,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:48,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-21 13:48:48,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134861354] [2022-11-21 13:48:48,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:48,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 13:48:48,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:48,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 13:48:48,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:48:48,120 INFO L87 Difference]: Start difference. First operand 58 states and 119 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:48,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:48,256 INFO L93 Difference]: Finished difference Result 85 states and 180 transitions. [2022-11-21 13:48:48,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 13:48:48,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-21 13:48:48,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:48,258 INFO L225 Difference]: With dead ends: 85 [2022-11-21 13:48:48,258 INFO L226 Difference]: Without dead ends: 80 [2022-11-21 13:48:48,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 13:48:48,259 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:48,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 13:48:48,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-21 13:48:48,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-21 13:48:48,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 2.1794871794871793) internal successors, (170), 79 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:48,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 170 transitions. [2022-11-21 13:48:48,263 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 170 transitions. Word has length 15 [2022-11-21 13:48:48,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:48,264 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 170 transitions. [2022-11-21 13:48:48,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:48,264 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 170 transitions. [2022-11-21 13:48:48,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 13:48:48,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:48,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:48,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:48,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:48,477 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:48,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:48,478 INFO L85 PathProgramCache]: Analyzing trace with hash -648239222, now seen corresponding path program 1 times [2022-11-21 13:48:48,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:48,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326895430] [2022-11-21 13:48:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:48,478 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 [2022-11-21 13:48:48,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:48,479 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:48,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:48,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:48:48,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:48,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:48:48,655 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:48,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326895430] [2022-11-21 13:48:48,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326895430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:48,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:48,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:48:48,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459388307] [2022-11-21 13:48:48,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:48,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:48:48,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:48,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:48:48,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:48:48,657 INFO L87 Difference]: Start difference. First operand 80 states and 170 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:48,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:48,984 INFO L93 Difference]: Finished difference Result 98 states and 195 transitions. [2022-11-21 13:48:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:48:48,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-21 13:48:48,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:48,986 INFO L225 Difference]: With dead ends: 98 [2022-11-21 13:48:48,986 INFO L226 Difference]: Without dead ends: 84 [2022-11-21 13:48:48,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:48:48,987 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 35 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:48,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 8 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 13:48:48,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-21 13:48:48,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2022-11-21 13:48:48,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 2.2162162162162162) internal successors, (164), 75 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 164 transitions. [2022-11-21 13:48:48,991 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 164 transitions. Word has length 16 [2022-11-21 13:48:48,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:48,991 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 164 transitions. [2022-11-21 13:48:48,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:48,992 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 164 transitions. [2022-11-21 13:48:48,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 13:48:48,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:48,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:49,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:49,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:49,193 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:49,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:49,194 INFO L85 PathProgramCache]: Analyzing trace with hash -382988429, now seen corresponding path program 1 times [2022-11-21 13:48:49,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:49,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126832760] [2022-11-21 13:48:49,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:48:49,195 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 [2022-11-21 13:48:49,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:49,196 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:49,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:49,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:48:49,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:48:49,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:49,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:49,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:49,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:49,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:49,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126832760] [2022-11-21 13:48:49,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126832760] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:48:49,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:48:49,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 13:48:49,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305654790] [2022-11-21 13:48:49,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:48:49,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 13:48:49,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:49,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 13:48:49,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-21 13:48:49,557 INFO L87 Difference]: Start difference. First operand 76 states and 164 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:50,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:50,428 INFO L93 Difference]: Finished difference Result 112 states and 241 transitions. [2022-11-21 13:48:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:48:50,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-21 13:48:50,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:50,430 INFO L225 Difference]: With dead ends: 112 [2022-11-21 13:48:50,430 INFO L226 Difference]: Without dead ends: 112 [2022-11-21 13:48:50,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-21 13:48:50,431 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 87 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:50,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 11 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 13:48:50,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-21 13:48:50,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 102. [2022-11-21 13:48:50,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 2.26) internal successors, (226), 101 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:50,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 226 transitions. [2022-11-21 13:48:50,434 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 226 transitions. Word has length 16 [2022-11-21 13:48:50,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:50,439 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 226 transitions. [2022-11-21 13:48:50,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:50,439 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 226 transitions. [2022-11-21 13:48:50,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 13:48:50,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:50,445 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:50,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:50,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:50,651 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:50,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:50,652 INFO L85 PathProgramCache]: Analyzing trace with hash -642637946, now seen corresponding path program 2 times [2022-11-21 13:48:50,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:50,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32527717] [2022-11-21 13:48:50,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:48:50,652 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 [2022-11-21 13:48:50,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:50,654 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:50,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:50,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:48:50,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:48:50,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 13:48:50,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:50,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:48:50,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:50,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32527717] [2022-11-21 13:48:50,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32527717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:48:50,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:48:50,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 13:48:50,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999760262] [2022-11-21 13:48:50,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:50,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 13:48:50,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:50,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 13:48:50,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:48:50,930 INFO L87 Difference]: Start difference. First operand 102 states and 226 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:51,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:51,406 INFO L93 Difference]: Finished difference Result 170 states and 386 transitions. [2022-11-21 13:48:51,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:48:51,407 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-21 13:48:51,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:51,408 INFO L225 Difference]: With dead ends: 170 [2022-11-21 13:48:51,408 INFO L226 Difference]: Without dead ends: 170 [2022-11-21 13:48:51,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-21 13:48:51,408 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 34 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:51,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 8 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 13:48:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-21 13:48:51,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 104. [2022-11-21 13:48:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 102 states have (on average 2.284313725490196) internal successors, (233), 103 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:51,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 233 transitions. [2022-11-21 13:48:51,414 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 233 transitions. Word has length 16 [2022-11-21 13:48:51,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:51,414 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 233 transitions. [2022-11-21 13:48:51,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:51,415 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 233 transitions. [2022-11-21 13:48:51,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 13:48:51,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:51,416 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:51,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:51,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:51,629 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:51,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:51,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1244875964, now seen corresponding path program 3 times [2022-11-21 13:48:51,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:51,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688218513] [2022-11-21 13:48:51,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:48:51,630 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 [2022-11-21 13:48:51,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:51,631 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:51,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:51,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 13:48:51,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:48:51,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 13:48:51,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:51,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:51,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:52,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:52,043 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:52,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688218513] [2022-11-21 13:48:52,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688218513] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 13:48:52,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:48:52,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-21 13:48:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115378049] [2022-11-21 13:48:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:52,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:48:52,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:48:52,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:48:52,046 INFO L87 Difference]: Start difference. First operand 104 states and 233 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:52,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:52,527 INFO L93 Difference]: Finished difference Result 132 states and 286 transitions. [2022-11-21 13:48:52,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:48:52,528 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-21 13:48:52,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:52,531 INFO L225 Difference]: With dead ends: 132 [2022-11-21 13:48:52,531 INFO L226 Difference]: Without dead ends: 128 [2022-11-21 13:48:52,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:48:52,532 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:52,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 8 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 13:48:52,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-21 13:48:52,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 112. [2022-11-21 13:48:52,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 2.3) internal successors, (253), 111 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:52,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 253 transitions. [2022-11-21 13:48:52,537 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 253 transitions. Word has length 17 [2022-11-21 13:48:52,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:52,538 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 253 transitions. [2022-11-21 13:48:52,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:52,538 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 253 transitions. [2022-11-21 13:48:52,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 13:48:52,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:52,539 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:52,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:52,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:52,752 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:52,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:52,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1156137224, now seen corresponding path program 4 times [2022-11-21 13:48:52,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:52,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485881348] [2022-11-21 13:48:52,754 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 13:48:52,754 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 [2022-11-21 13:48:52,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:52,755 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:52,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:52,913 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 13:48:52,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:48:52,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 13:48:52,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:53,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:53,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:53,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:53,230 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:53,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485881348] [2022-11-21 13:48:53,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485881348] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 13:48:53,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:48:53,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-21 13:48:53,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345047321] [2022-11-21 13:48:53,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:53,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:48:53,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:53,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:48:53,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:48:53,232 INFO L87 Difference]: Start difference. First operand 112 states and 253 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:53,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:53,731 INFO L93 Difference]: Finished difference Result 132 states and 298 transitions. [2022-11-21 13:48:53,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:48:53,732 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-21 13:48:53,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:53,733 INFO L225 Difference]: With dead ends: 132 [2022-11-21 13:48:53,733 INFO L226 Difference]: Without dead ends: 132 [2022-11-21 13:48:53,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 13:48:53,734 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 19 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:53,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 7 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 13:48:53,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-21 13:48:53,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 102. [2022-11-21 13:48:53,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 2.24) internal successors, (224), 101 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 224 transitions. [2022-11-21 13:48:53,739 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 224 transitions. Word has length 17 [2022-11-21 13:48:53,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:53,739 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 224 transitions. [2022-11-21 13:48:53,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:53,740 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 224 transitions. [2022-11-21 13:48:53,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 13:48:53,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:53,741 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:53,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:53,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:53,954 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:53,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:53,955 INFO L85 PathProgramCache]: Analyzing trace with hash 281491032, now seen corresponding path program 2 times [2022-11-21 13:48:53,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:53,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925836206] [2022-11-21 13:48:53,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:48:53,955 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 [2022-11-21 13:48:53,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:53,956 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:53,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:54,104 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:48:54,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:48:54,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-21 13:48:54,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:54,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:54,828 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 13:48:54,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:54,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925836206] [2022-11-21 13:48:54,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925836206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:48:54,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:48:54,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2022-11-21 13:48:54,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104759816] [2022-11-21 13:48:54,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:48:54,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 13:48:54,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:54,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 13:48:54,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:48:54,831 INFO L87 Difference]: Start difference. First operand 102 states and 224 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:58,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:58,670 INFO L93 Difference]: Finished difference Result 246 states and 587 transitions. [2022-11-21 13:48:58,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-21 13:48:58,671 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-21 13:48:58,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:58,672 INFO L225 Difference]: With dead ends: 246 [2022-11-21 13:48:58,673 INFO L226 Difference]: Without dead ends: 246 [2022-11-21 13:48:58,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=249, Invalid=563, Unknown=0, NotChecked=0, Total=812 [2022-11-21 13:48:58,674 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 126 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:58,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 10 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 13:48:58,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-21 13:48:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 136. [2022-11-21 13:48:58,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 134 states have (on average 2.574626865671642) internal successors, (345), 135 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:58,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 345 transitions. [2022-11-21 13:48:58,680 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 345 transitions. Word has length 19 [2022-11-21 13:48:58,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:58,680 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 345 transitions. [2022-11-21 13:48:58,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 15 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:58,681 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 345 transitions. [2022-11-21 13:48:58,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 13:48:58,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:58,682 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:58,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:58,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:58,897 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:58,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:58,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1446149896, now seen corresponding path program 3 times [2022-11-21 13:48:58,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:58,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482047842] [2022-11-21 13:48:58,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:48:58,898 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 [2022-11-21 13:48:58,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:58,899 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:58,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:48:59,046 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 13:48:59,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:48:59,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 13:48:59,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:48:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 13:48:59,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:48:59,255 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 13:48:59,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:48:59,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482047842] [2022-11-21 13:48:59,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482047842] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 13:48:59,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:48:59,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2022-11-21 13:48:59,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898177658] [2022-11-21 13:48:59,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:48:59,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:48:59,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:48:59,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:48:59,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:48:59,257 INFO L87 Difference]: Start difference. First operand 136 states and 345 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:59,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:48:59,654 INFO L93 Difference]: Finished difference Result 202 states and 477 transitions. [2022-11-21 13:48:59,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:48:59,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-21 13:48:59,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:48:59,657 INFO L225 Difference]: With dead ends: 202 [2022-11-21 13:48:59,657 INFO L226 Difference]: Without dead ends: 202 [2022-11-21 13:48:59,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-21 13:48:59,658 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 13:48:59,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 6 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 13:48:59,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-21 13:48:59,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2022-11-21 13:48:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 138 states have (on average 2.601449275362319) internal successors, (359), 139 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:59,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 359 transitions. [2022-11-21 13:48:59,664 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 359 transitions. Word has length 19 [2022-11-21 13:48:59,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:48:59,664 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 359 transitions. [2022-11-21 13:48:59,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:48:59,665 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 359 transitions. [2022-11-21 13:48:59,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 13:48:59,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:48:59,666 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:48:59,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-21 13:48:59,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:48:59,879 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:48:59,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:48:59,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1740319880, now seen corresponding path program 4 times [2022-11-21 13:48:59,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:48:59,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341763882] [2022-11-21 13:48:59,880 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 13:48:59,880 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 [2022-11-21 13:48:59,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:48:59,881 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:48:59,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:49:00,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 13:49:00,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:49:00,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 13:49:00,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:49:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:49:00,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:49:00,374 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:49:00,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:49:00,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341763882] [2022-11-21 13:49:00,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341763882] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:49:00,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:49:00,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-21 13:49:00,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426553203] [2022-11-21 13:49:00,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:49:00,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:49:00,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:49:00,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:49:00,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:49:00,376 INFO L87 Difference]: Start difference. First operand 140 states and 359 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:01,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:01,567 INFO L93 Difference]: Finished difference Result 164 states and 390 transitions. [2022-11-21 13:49:01,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 13:49:01,568 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-21 13:49:01,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:01,569 INFO L225 Difference]: With dead ends: 164 [2022-11-21 13:49:01,569 INFO L226 Difference]: Without dead ends: 160 [2022-11-21 13:49:01,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:49:01,570 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 39 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:01,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 16 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 13:49:01,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-21 13:49:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 138. [2022-11-21 13:49:01,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 136 states have (on average 2.588235294117647) internal successors, (352), 137 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:01,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 352 transitions. [2022-11-21 13:49:01,575 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 352 transitions. Word has length 19 [2022-11-21 13:49:01,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:01,576 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 352 transitions. [2022-11-21 13:49:01,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:01,576 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 352 transitions. [2022-11-21 13:49:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-21 13:49:01,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:01,577 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:01,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-21 13:49:01,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:49:01,790 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:49:01,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:01,791 INFO L85 PathProgramCache]: Analyzing trace with hash -66843564, now seen corresponding path program 5 times [2022-11-21 13:49:01,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:49:01,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062778068] [2022-11-21 13:49:01,791 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 13:49:01,792 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 [2022-11-21 13:49:01,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:49:01,793 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:49:01,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:49:01,950 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-21 13:49:01,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:49:01,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 13:49:01,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:49:02,059 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:49:02,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:49:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:49:02,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:49:02,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062778068] [2022-11-21 13:49:02,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062778068] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:49:02,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:49:02,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2022-11-21 13:49:02,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250691471] [2022-11-21 13:49:02,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:49:02,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-21 13:49:02,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:49:02,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-21 13:49:02,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-21 13:49:02,274 INFO L87 Difference]: Start difference. First operand 138 states and 352 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:03,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:03,224 INFO L93 Difference]: Finished difference Result 146 states and 363 transitions. [2022-11-21 13:49:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 13:49:03,225 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-21 13:49:03,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:03,226 INFO L225 Difference]: With dead ends: 146 [2022-11-21 13:49:03,226 INFO L226 Difference]: Without dead ends: 142 [2022-11-21 13:49:03,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2022-11-21 13:49:03,227 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 40 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:03,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 19 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 13:49:03,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-11-21 13:49:03,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2022-11-21 13:49:03,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 136 states have (on average 2.573529411764706) internal successors, (350), 137 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions. [2022-11-21 13:49:03,232 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 19 [2022-11-21 13:49:03,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:03,232 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 350 transitions. [2022-11-21 13:49:03,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:03,233 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions. [2022-11-21 13:49:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-21 13:49:03,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:03,233 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:03,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:49:03,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:49:03,447 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:49:03,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:03,447 INFO L85 PathProgramCache]: Analyzing trace with hash 218055416, now seen corresponding path program 1 times [2022-11-21 13:49:03,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:49:03,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271495849] [2022-11-21 13:49:03,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:49:03,448 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 [2022-11-21 13:49:03,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:49:03,449 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:49:03,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:49:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:49:03,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 13:49:03,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:49:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:49:03,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:49:04,261 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 13:49:04,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:49:04,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271495849] [2022-11-21 13:49:04,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271495849] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:49:04,261 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 13:49:04,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-21 13:49:04,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758140748] [2022-11-21 13:49:04,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 13:49:04,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 13:49:04,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:49:04,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 13:49:04,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:49:04,263 INFO L87 Difference]: Start difference. First operand 138 states and 350 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:06,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:49:06,419 INFO L93 Difference]: Finished difference Result 208 states and 525 transitions. [2022-11-21 13:49:06,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 13:49:06,420 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-21 13:49:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:49:06,421 INFO L225 Difference]: With dead ends: 208 [2022-11-21 13:49:06,422 INFO L226 Difference]: Without dead ends: 208 [2022-11-21 13:49:06,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-11-21 13:49:06,423 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 210 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 13:49:06,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 36 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 13:49:06,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-21 13:49:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 166. [2022-11-21 13:49:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 164 states have (on average 2.3658536585365852) internal successors, (388), 165 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 388 transitions. [2022-11-21 13:49:06,428 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 388 transitions. Word has length 20 [2022-11-21 13:49:06,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:49:06,428 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 388 transitions. [2022-11-21 13:49:06,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:49:06,429 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 388 transitions. [2022-11-21 13:49:06,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-21 13:49:06,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:49:06,430 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:49:06,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:49:06,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:49:06,639 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2022-11-21 13:49:06,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:49:06,640 INFO L85 PathProgramCache]: Analyzing trace with hash 662983, now seen corresponding path program 2 times [2022-11-21 13:49:06,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:49:06,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797082816] [2022-11-21 13:49:06,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:49:06,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-21 13:49:06,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:49:06,642 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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) [2022-11-21 13:49:06,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22d94829-a3df-466d-8562-c3a68a386fd1/bin/uautomizer-vX5HgA9Q3a/mathsat -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 [2022-11-21 13:49:06,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 13:49:06,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:49:06,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 13:49:06,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:49:16,704 WARN L233 SmtUtils]: Spent 8.99s on a formula simplification. DAG size of input: 780 DAG size of output: 204 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-21 13:49:16,705 INFO L321 Elim1Store]: treesize reduction 1224, result has 22.0 percent of original size [2022-11-21 13:49:16,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 36 new quantified variables, introduced 190 case distinctions, treesize of input 21313 treesize of output 583