/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 22:05:14,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 22:05:14,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 22:05:14,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 22:05:14,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 22:05:14,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 22:05:14,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 22:05:14,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 22:05:14,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 22:05:14,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 22:05:14,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 22:05:14,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 22:05:14,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 22:05:14,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 22:05:14,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 22:05:14,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 22:05:14,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 22:05:14,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 22:05:14,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 22:05:14,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 22:05:14,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 22:05:14,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 22:05:14,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 22:05:14,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 22:05:14,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 22:05:14,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 22:05:14,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 22:05:14,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 22:05:14,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 22:05:15,009 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 22:05:15,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 22:05:15,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 22:05:15,010 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 22:05:15,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 22:05:15,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 22:05:15,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 22:05:15,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 22:05:15,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 22:05:15,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 22:05:15,011 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 22:05:15,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 22:05:15,011 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 22:05:15,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 22:05:15,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 22:05:15,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 22:05:15,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 22:05:15,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 22:05:15,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 22:05:15,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 22:05:15,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 22:05:15,013 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 22:05:15,013 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 22:05:15,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 22:05:15,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 22:05:15,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 22:05:15,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 22:05:15,297 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 22:05:15,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound10.c [2021-05-02 22:05:15,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a883f59ae/a524dea4f7d9416c8ec0650299399cdb/FLAGfc36bd410 [2021-05-02 22:05:16,044 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 22:05:16,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound10.c [2021-05-02 22:05:16,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a883f59ae/a524dea4f7d9416c8ec0650299399cdb/FLAGfc36bd410 [2021-05-02 22:05:16,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a883f59ae/a524dea4f7d9416c8ec0650299399cdb [2021-05-02 22:05:16,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 22:05:16,376 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 22:05:16,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 22:05:16,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 22:05:16,383 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 22:05:16,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 10:05:16" (1/1) ... [2021-05-02 22:05:16,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b0c0f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:16, skipping insertion in model container [2021-05-02 22:05:16,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 10:05:16" (1/1) ... [2021-05-02 22:05:16,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 22:05:16,399 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 22:05:16,481 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound10.c[454,467] [2021-05-02 22:05:16,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 22:05:16,497 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 22:05:16,511 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound10.c[454,467] [2021-05-02 22:05:16,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 22:05:16,541 INFO L208 MainTranslator]: Completed translation [2021-05-02 22:05:16,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:16 WrapperNode [2021-05-02 22:05:16,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 22:05:16,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 22:05:16,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 22:05:16,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 22:05:16,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:16" (1/1) ... [2021-05-02 22:05:16,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:16" (1/1) ... [2021-05-02 22:05:16,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:16" (1/1) ... [2021-05-02 22:05:16,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:16" (1/1) ... [2021-05-02 22:05:16,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:16" (1/1) ... [2021-05-02 22:05:16,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:16" (1/1) ... [2021-05-02 22:05:16,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:16" (1/1) ... [2021-05-02 22:05:16,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 22:05:16,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 22:05:16,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 22:05:16,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 22:05:16,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 22:05:16,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 22:05:16,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 22:05:16,655 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 22:05:16,655 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 22:05:16,655 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 22:05:16,656 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 22:05:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 22:05:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 22:05:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 22:05:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 22:05:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 22:05:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 22:05:16,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 22:05:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 22:05:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 22:05:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 22:05:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 22:05:16,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 22:05:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 22:05:16,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 22:05:16,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 22:05:16,968 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 22:05:16,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 10:05:16 BoogieIcfgContainer [2021-05-02 22:05:16,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 22:05:16,970 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 22:05:16,970 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 22:05:16,971 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 22:05:16,990 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 10:05:16" (1/1) ... [2021-05-02 22:05:17,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 10:05:17 BasicIcfg [2021-05-02 22:05:17,002 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 22:05:17,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 22:05:17,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 22:05:17,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 22:05:17,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 10:05:16" (1/4) ... [2021-05-02 22:05:17,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f33b01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 10:05:17, skipping insertion in model container [2021-05-02 22:05:17,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:16" (2/4) ... [2021-05-02 22:05:17,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f33b01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 10:05:17, skipping insertion in model container [2021-05-02 22:05:17,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 10:05:16" (3/4) ... [2021-05-02 22:05:17,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f33b01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 10:05:17, skipping insertion in model container [2021-05-02 22:05:17,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 10:05:17" (4/4) ... [2021-05-02 22:05:17,025 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_unwindbound10.cJordan [2021-05-02 22:05:17,029 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 22:05:17,035 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 22:05:17,047 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 22:05:17,069 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 22:05:17,070 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 22:05:17,070 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 22:05:17,070 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 22:05:17,070 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 22:05:17,070 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 22:05:17,070 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 22:05:17,070 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 22:05:17,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 22:05:17,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 22:05:17,090 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:17,091 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:05:17,091 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:17,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:17,096 INFO L82 PathProgramCache]: Analyzing trace with hash -630084848, now seen corresponding path program 1 times [2021-05-02 22:05:17,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:17,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77338846] [2021-05-02 22:05:17,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:05:17,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 22:05:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:05:17,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 22:05:17,339 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:17,339 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77338846] [2021-05-02 22:05:17,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77338846] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 22:05:17,340 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 22:05:17,340 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 22:05:17,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380470397] [2021-05-02 22:05:17,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 22:05:17,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:17,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 22:05:17,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 22:05:17,359 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 22:05:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:17,471 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-05-02 22:05:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 22:05:17,472 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 22:05:17,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:17,478 INFO L225 Difference]: With dead ends: 23 [2021-05-02 22:05:17,478 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 22:05:17,479 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 22:05:17,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 22:05:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-05-02 22:05:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 22:05:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-02 22:05:17,514 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2021-05-02 22:05:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:17,514 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-02 22:05:17,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 22:05:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-02 22:05:17,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 22:05:17,515 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:17,515 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:05:17,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 22:05:17,516 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:17,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:17,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1971636769, now seen corresponding path program 1 times [2021-05-02 22:05:17,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:17,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390706784] [2021-05-02 22:05:17,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:17,527 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:17,527 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2128170651] [2021-05-02 22:05:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:05:17,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 22:05:17,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:17,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:17,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:17,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:17,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:17,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 22:05:17,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:17,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390706784] [2021-05-02 22:05:17,781 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:17,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128170651] [2021-05-02 22:05:17,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128170651] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 22:05:17,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 22:05:17,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 22:05:17,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392763421] [2021-05-02 22:05:17,782 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 22:05:17,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:17,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 22:05:17,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 22:05:17,783 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 22:05:17,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:17,793 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-02 22:05:17,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 22:05:17,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 22:05:17,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:17,794 INFO L225 Difference]: With dead ends: 19 [2021-05-02 22:05:17,794 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 22:05:17,795 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 22:05:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 22:05:17,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 22:05:17,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 22:05:17,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-02 22:05:17,798 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-05-02 22:05:17,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:17,798 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-02 22:05:17,798 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 22:05:17,799 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-02 22:05:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 22:05:17,799 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:17,799 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:05:18,018 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 22:05:18,018 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:18,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:18,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1972709245, now seen corresponding path program 1 times [2021-05-02 22:05:18,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:18,019 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971791013] [2021-05-02 22:05:18,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:18,031 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:18,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351396753] [2021-05-02 22:05:18,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:05:18,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 22:05:18,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 22:05:18,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:18,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971791013] [2021-05-02 22:05:18,226 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:18,226 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351396753] [2021-05-02 22:05:18,226 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351396753] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 22:05:18,226 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 22:05:18,226 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 22:05:18,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152205296] [2021-05-02 22:05:18,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 22:05:18,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:18,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 22:05:18,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 22:05:18,227 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 22:05:18,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:18,283 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-05-02 22:05:18,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 22:05:18,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 22:05:18,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:18,284 INFO L225 Difference]: With dead ends: 26 [2021-05-02 22:05:18,285 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 22:05:18,285 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 22:05:18,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 22:05:18,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-02 22:05:18,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 22:05:18,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-05-02 22:05:18,289 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2021-05-02 22:05:18,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:18,289 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-05-02 22:05:18,289 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 22:05:18,289 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-05-02 22:05:18,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 22:05:18,290 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:18,290 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:05:18,492 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:18,493 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:18,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:18,493 INFO L82 PathProgramCache]: Analyzing trace with hash -832305310, now seen corresponding path program 1 times [2021-05-02 22:05:18,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:18,494 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066374769] [2021-05-02 22:05:18,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:18,501 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:18,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109573545] [2021-05-02 22:05:18,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:05:18,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 22:05:18,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:18,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:18,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:18,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:18,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:18,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:18,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:18,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:18,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:18,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 22:05:18,678 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:18,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066374769] [2021-05-02 22:05:18,678 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:18,678 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109573545] [2021-05-02 22:05:18,678 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109573545] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:05:18,678 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:05:18,678 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 22:05:18,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626250067] [2021-05-02 22:05:18,679 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 22:05:18,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:18,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 22:05:18,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 22:05:18,679 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 22:05:18,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:18,714 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-05-02 22:05:18,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 22:05:18,715 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-02 22:05:18,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:18,716 INFO L225 Difference]: With dead ends: 27 [2021-05-02 22:05:18,716 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 22:05:18,716 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 22:05:18,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 22:05:18,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 22:05:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 22:05:18,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-05-02 22:05:18,719 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2021-05-02 22:05:18,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:18,719 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-05-02 22:05:18,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 22:05:18,719 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-05-02 22:05:18,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 22:05:18,720 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:18,720 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:05:18,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:18,939 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:18,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:18,940 INFO L82 PathProgramCache]: Analyzing trace with hash -831232834, now seen corresponding path program 1 times [2021-05-02 22:05:18,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:18,940 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928727390] [2021-05-02 22:05:18,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:18,947 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:18,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493122900] [2021-05-02 22:05:18,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:05:19,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 22:05:19,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 22:05:19,167 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:19,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928727390] [2021-05-02 22:05:19,167 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:19,167 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493122900] [2021-05-02 22:05:19,167 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493122900] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:05:19,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:05:19,168 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 22:05:19,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751093731] [2021-05-02 22:05:19,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 22:05:19,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:19,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 22:05:19,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 22:05:19,176 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 22:05:19,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:19,267 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-05-02 22:05:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 22:05:19,268 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-05-02 22:05:19,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:19,269 INFO L225 Difference]: With dead ends: 34 [2021-05-02 22:05:19,269 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 22:05:19,273 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 81.0ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-05-02 22:05:19,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 22:05:19,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-02 22:05:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 22:05:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-05-02 22:05:19,283 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 20 [2021-05-02 22:05:19,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:19,283 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-05-02 22:05:19,283 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 22:05:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-05-02 22:05:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 22:05:19,284 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:19,284 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:05:19,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:19,501 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:19,502 INFO L82 PathProgramCache]: Analyzing trace with hash -870943837, now seen corresponding path program 2 times [2021-05-02 22:05:19,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:19,502 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185658951] [2021-05-02 22:05:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:19,511 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:19,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1144146382] [2021-05-02 22:05:19,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:19,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 22:05:19,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 22:05:19,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 22:05:19,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:19,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:19,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:19,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:19,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:19,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:19,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:19,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:19,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:19,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:19,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:19,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:19,685 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 22:05:19,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:19,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185658951] [2021-05-02 22:05:19,685 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:19,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144146382] [2021-05-02 22:05:19,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144146382] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:05:19,686 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:05:19,686 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 22:05:19,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076275561] [2021-05-02 22:05:19,686 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 22:05:19,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:19,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 22:05:19,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 22:05:19,687 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 22:05:19,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:19,729 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-05-02 22:05:19,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 22:05:19,729 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2021-05-02 22:05:19,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:19,730 INFO L225 Difference]: With dead ends: 35 [2021-05-02 22:05:19,730 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 22:05:19,730 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-02 22:05:19,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 22:05:19,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-02 22:05:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 22:05:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-05-02 22:05:19,733 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2021-05-02 22:05:19,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:19,733 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-05-02 22:05:19,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 5 states have internal predecessors, (20), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 22:05:19,733 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-05-02 22:05:19,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 22:05:19,734 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:19,734 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:05:19,934 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 22:05:19,935 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:19,935 INFO L82 PathProgramCache]: Analyzing trace with hash -869871361, now seen corresponding path program 2 times [2021-05-02 22:05:19,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:19,935 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670158211] [2021-05-02 22:05:19,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:19,942 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:19,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459192852] [2021-05-02 22:05:19,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:19,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 22:05:20,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 22:05:20,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 22:05:20,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 22:05:20,100 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:20,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670158211] [2021-05-02 22:05:20,100 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:20,100 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459192852] [2021-05-02 22:05:20,100 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459192852] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:05:20,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:05:20,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 22:05:20,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682556829] [2021-05-02 22:05:20,101 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 22:05:20,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:20,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 22:05:20,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-02 22:05:20,101 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 22:05:20,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:20,170 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-05-02 22:05:20,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 22:05:20,171 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2021-05-02 22:05:20,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:20,172 INFO L225 Difference]: With dead ends: 42 [2021-05-02 22:05:20,172 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 22:05:20,172 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-05-02 22:05:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 22:05:20,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-05-02 22:05:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 29 states have internal predecessors, (31), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 22:05:20,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-05-02 22:05:20,174 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 28 [2021-05-02 22:05:20,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:20,175 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-05-02 22:05:20,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 22:05:20,175 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-05-02 22:05:20,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 22:05:20,175 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:20,175 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:05:20,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:20,392 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:20,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:20,393 INFO L82 PathProgramCache]: Analyzing trace with hash 2080181988, now seen corresponding path program 3 times [2021-05-02 22:05:20,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:20,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67437134] [2021-05-02 22:05:20,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:20,401 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:20,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917900269] [2021-05-02 22:05:20,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:20,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 22:05:20,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 22:05:20,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 22:05:20,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:20,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:20,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:20,542 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 22:05:20,542 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:20,542 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67437134] [2021-05-02 22:05:20,543 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:20,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917900269] [2021-05-02 22:05:20,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917900269] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:05:20,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:05:20,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 22:05:20,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960583755] [2021-05-02 22:05:20,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 22:05:20,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:20,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 22:05:20,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 22:05:20,544 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 22:05:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:20,575 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-05-02 22:05:20,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 22:05:20,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2021-05-02 22:05:20,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:20,575 INFO L225 Difference]: With dead ends: 39 [2021-05-02 22:05:20,575 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 22:05:20,576 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 31.6ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-02 22:05:20,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 22:05:20,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 22:05:20,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 22:05:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 22:05:20,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-05-02 22:05:20,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:20,577 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 22:05:20,577 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-02 22:05:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 22:05:20,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 22:05:20,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:20,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 10:05:20 BasicIcfg [2021-05-02 22:05:20,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 22:05:20,789 INFO L168 Benchmark]: Toolchain (without parser) took 4412.51 ms. Allocated memory was 197.1 MB in the beginning and 239.1 MB in the end (delta: 41.9 MB). Free memory was 163.3 MB in the beginning and 217.6 MB in the end (delta: -54.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 22:05:20,789 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 197.1 MB. Free memory is still 179.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 22:05:20,789 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.06 ms. Allocated memory is still 197.1 MB. Free memory was 163.0 MB in the beginning and 181.3 MB in the end (delta: -18.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2021-05-02 22:05:20,789 INFO L168 Benchmark]: Boogie Preprocessor took 54.67 ms. Allocated memory is still 197.1 MB. Free memory was 181.3 MB in the beginning and 179.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 22:05:20,789 INFO L168 Benchmark]: RCFGBuilder took 370.98 ms. Allocated memory is still 197.1 MB. Free memory was 179.6 MB in the beginning and 165.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 22:05:20,789 INFO L168 Benchmark]: IcfgTransformer took 31.73 ms. Allocated memory is still 197.1 MB. Free memory was 165.6 MB in the beginning and 164.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 22:05:20,789 INFO L168 Benchmark]: TraceAbstraction took 3785.51 ms. Allocated memory was 197.1 MB in the beginning and 239.1 MB in the end (delta: 41.9 MB). Free memory was 164.0 MB in the beginning and 217.6 MB in the end (delta: -53.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 22:05:20,790 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 197.1 MB. Free memory is still 179.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 163.06 ms. Allocated memory is still 197.1 MB. Free memory was 163.0 MB in the beginning and 181.3 MB in the end (delta: -18.3 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.67 ms. Allocated memory is still 197.1 MB. Free memory was 181.3 MB in the beginning and 179.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 370.98 ms. Allocated memory is still 197.1 MB. Free memory was 179.6 MB in the beginning and 165.6 MB in the end (delta: 14.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 31.73 ms. Allocated memory is still 197.1 MB. Free memory was 165.6 MB in the beginning and 164.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3785.51 ms. Allocated memory was 197.1 MB in the beginning and 239.1 MB in the end (delta: 41.9 MB). Free memory was 164.0 MB in the beginning and 217.6 MB in the end (delta: -53.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3717.7ms, OverallIterations: 8, TraceHistogramMax: 4, EmptinessCheckTime: 15.4ms, AutomataDifference: 487.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 142 SDtfs, 52 SDslu, 381 SDs, 0 SdLazy, 195 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 221.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 318.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=7, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 41.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 102.3ms SsaConstructionTime, 218.4ms SatisfiabilityAnalysisTime, 994.2ms InterpolantComputationTime, 167 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 159 ConstructedInterpolants, 0 QuantifiedInterpolants, 486 SizeOfPredicates, 13 NumberOfNonLiveVariables, 882 ConjunctsInSsa, 88 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 46/79 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...