/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_unwindbound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 22:05:46,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 22:05:46,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 22:05:46,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 22:05:46,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 22:05:46,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 22:05:46,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 22:05:46,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 22:05:46,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 22:05:46,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 22:05:46,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 22:05:46,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 22:05:46,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 22:05:46,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 22:05:46,323 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 22:05:46,324 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 22:05:46,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 22:05:46,327 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 22:05:46,329 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 22:05:46,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 22:05:46,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 22:05:46,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 22:05:46,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 22:05:46,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 22:05:46,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 22:05:46,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 22:05:46,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 22:05:46,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 22:05:46,372 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 22:05:46,382 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 22:05:46,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 22:05:46,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 22:05:46,384 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 22:05:46,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 22:05:46,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 22:05:46,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 22:05:46,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 22:05:46,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 22:05:46,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 22:05:46,385 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 22:05:46,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 22:05:46,385 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 22:05:46,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 22:05:46,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 22:05:46,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 22:05:46,386 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 22:05:46,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 22:05:46,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 22:05:46,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 22:05:46,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 22:05:46,388 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 22:05:46,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 22:05:46,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 22:05:46,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 22:05:46,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 22:05:46,720 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 22:05:46,721 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 22:05:46,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound50.c [2021-05-02 22:05:46,780 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f15df0b14/0b606ce8ca2a411eb2f96f8c963e9d7c/FLAG0c923f2ba [2021-05-02 22:05:47,153 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 22:05:47,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps2-ll_unwindbound50.c [2021-05-02 22:05:47,159 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f15df0b14/0b606ce8ca2a411eb2f96f8c963e9d7c/FLAG0c923f2ba [2021-05-02 22:05:47,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f15df0b14/0b606ce8ca2a411eb2f96f8c963e9d7c [2021-05-02 22:05:47,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 22:05:47,579 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 22:05:47,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 22:05:47,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 22:05:47,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 22:05:47,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 10:05:47" (1/1) ... [2021-05-02 22:05:47,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2faf2e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:47, skipping insertion in model container [2021-05-02 22:05:47,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 10:05:47" (1/1) ... [2021-05-02 22:05:47,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 22:05:47,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 22:05:47,713 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_unwindbound50.c[454,467] [2021-05-02 22:05:47,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 22:05:47,735 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 22:05:47,754 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_unwindbound50.c[454,467] [2021-05-02 22:05:47,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 22:05:47,784 INFO L208 MainTranslator]: Completed translation [2021-05-02 22:05:47,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:47 WrapperNode [2021-05-02 22:05:47,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 22:05:47,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 22:05:47,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 22:05:47,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 22:05:47,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:47" (1/1) ... [2021-05-02 22:05:47,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:47" (1/1) ... [2021-05-02 22:05:47,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:47" (1/1) ... [2021-05-02 22:05:47,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:47" (1/1) ... [2021-05-02 22:05:47,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:47" (1/1) ... [2021-05-02 22:05:47,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:47" (1/1) ... [2021-05-02 22:05:47,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:47" (1/1) ... [2021-05-02 22:05:47,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 22:05:47,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 22:05:47,819 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 22:05:47,819 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 22:05:47,820 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:47" (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 22:05:47,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 22:05:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 22:05:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 22:05:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 22:05:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 22:05:47,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 22:05:47,886 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 22:05:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 22:05:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 22:05:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 22:05:47,887 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 22:05:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 22:05:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 22:05:47,888 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 22:05:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 22:05:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 22:05:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 22:05:47,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 22:05:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 22:05:47,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 22:05:48,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 22:05:48,103 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 22:05:48,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 10:05:48 BoogieIcfgContainer [2021-05-02 22:05:48,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 22:05:48,105 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 22:05:48,105 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 22:05:48,106 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 22:05:48,108 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 10:05:48" (1/1) ... [2021-05-02 22:05:48,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 10:05:48 BasicIcfg [2021-05-02 22:05:48,122 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 22:05:48,124 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 22:05:48,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 22:05:48,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 22:05:48,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 10:05:47" (1/4) ... [2021-05-02 22:05:48,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb5dfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 10:05:48, skipping insertion in model container [2021-05-02 22:05:48,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:05:47" (2/4) ... [2021-05-02 22:05:48,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb5dfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 10:05:48, skipping insertion in model container [2021-05-02 22:05:48,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 10:05:48" (3/4) ... [2021-05-02 22:05:48,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb5dfa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 10:05:48, skipping insertion in model container [2021-05-02 22:05:48,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 10:05:48" (4/4) ... [2021-05-02 22:05:48,129 INFO L111 eAbstractionObserver]: Analyzing ICFG ps2-ll_unwindbound50.cJordan [2021-05-02 22:05:48,133 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 22:05:48,137 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 22:05:48,151 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 22:05:48,168 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 22:05:48,168 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 22:05:48,168 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 22:05:48,168 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 22:05:48,168 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 22:05:48,169 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 22:05:48,169 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 22:05:48,169 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 22:05:48,179 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 22:05:48,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 22:05:48,184 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:48,184 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:05:48,184 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:48,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:48,189 INFO L82 PathProgramCache]: Analyzing trace with hash -630084848, now seen corresponding path program 1 times [2021-05-02 22:05:48,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:48,196 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287754983] [2021-05-02 22:05:48,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:48,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:05:48,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 22:05:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:05:48,439 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 22:05:48,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:48,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287754983] [2021-05-02 22:05:48,441 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287754983] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 22:05:48,441 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 22:05:48,441 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 22:05:48,442 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300151718] [2021-05-02 22:05:48,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 22:05:48,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:48,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 22:05:48,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 22:05:48,462 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 22:05:48,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:48,533 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2021-05-02 22:05:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 22:05:48,535 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 22:05:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:48,541 INFO L225 Difference]: With dead ends: 23 [2021-05-02 22:05:48,541 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 22:05:48,542 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 22:05:48,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 22:05:48,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-05-02 22:05:48,561 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 22:05:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-02 22:05:48,562 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2021-05-02 22:05:48,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:48,563 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-02 22:05:48,563 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 22:05:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-02 22:05:48,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 22:05:48,564 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:48,564 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:05:48,564 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 22:05:48,564 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:48,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:48,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1971636769, now seen corresponding path program 1 times [2021-05-02 22:05:48,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:48,566 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723409041] [2021-05-02 22:05:48,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:48,583 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:48,583 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700867144] [2021-05-02 22:05:48,583 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 22:05:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:05:48,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 22:05:48,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:48,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:48,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:48,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:48,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:48,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:48,808 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 22:05:48,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:48,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723409041] [2021-05-02 22:05:48,810 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:48,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700867144] [2021-05-02 22:05:48,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700867144] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 22:05:48,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 22:05:48,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 22:05:48,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236633446] [2021-05-02 22:05:48,812 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 22:05:48,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:48,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 22:05:48,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 22:05:48,815 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 22:05:48,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:48,824 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-02 22:05:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 22:05:48,825 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 22:05:48,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:48,826 INFO L225 Difference]: With dead ends: 19 [2021-05-02 22:05:48,826 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 22:05:48,826 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.2ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 22:05:48,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 22:05:48,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-05-02 22:05:48,830 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 22:05:48,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-05-02 22:05:48,833 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-05-02 22:05:48,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:48,833 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-05-02 22:05:48,833 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 22:05:48,834 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-05-02 22:05:48,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 22:05:48,834 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:48,834 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:05:49,051 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 22:05:49,051 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:49,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:49,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1972709245, now seen corresponding path program 1 times [2021-05-02 22:05:49,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:49,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398983819] [2021-05-02 22:05:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:49,079 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:49,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812839920] [2021-05-02 22:05:49,080 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 22:05:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:05:49,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 22:05:49,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:49,208 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 22:05:49,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:49,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398983819] [2021-05-02 22:05:49,208 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:49,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812839920] [2021-05-02 22:05:49,209 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812839920] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 22:05:49,209 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 22:05:49,209 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 22:05:49,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987007908] [2021-05-02 22:05:49,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 22:05:49,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:49,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 22:05:49,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 22:05:49,210 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 22:05:49,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:49,251 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-05-02 22:05:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 22:05:49,252 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 22:05:49,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:49,253 INFO L225 Difference]: With dead ends: 26 [2021-05-02 22:05:49,253 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 22:05:49,253 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 22:05:49,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 22:05:49,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-02 22:05:49,257 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 22:05:49,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-05-02 22:05:49,257 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 12 [2021-05-02 22:05:49,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:49,258 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-05-02 22:05:49,258 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 22:05:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-05-02 22:05:49,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 22:05:49,258 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:49,259 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 22:05:49,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:49,460 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:49,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:49,460 INFO L82 PathProgramCache]: Analyzing trace with hash -832305310, now seen corresponding path program 1 times [2021-05-02 22:05:49,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:49,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877767237] [2021-05-02 22:05:49,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:49,474 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:49,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [213094606] [2021-05-02 22:05:49,475 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 22:05:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:05:49,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 22:05:49,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:49,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:49,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:49,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:49,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:49,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:49,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:49,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:49,586 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 22:05:49,586 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:49,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877767237] [2021-05-02 22:05:49,587 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:49,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213094606] [2021-05-02 22:05:49,587 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213094606] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:05:49,587 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:05:49,587 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 22:05:49,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071918944] [2021-05-02 22:05:49,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 22:05:49,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:49,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 22:05:49,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-02 22:05:49,589 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 22:05:49,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:49,617 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-05-02 22:05:49,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 22:05:49,621 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 22:05:49,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:49,621 INFO L225 Difference]: With dead ends: 27 [2021-05-02 22:05:49,622 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 22:05:49,622 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 22:05:49,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 22:05:49,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 22:05:49,625 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 22:05:49,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-05-02 22:05:49,626 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 20 [2021-05-02 22:05:49,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:49,626 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-05-02 22:05:49,626 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 22:05:49,626 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-05-02 22:05:49,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 22:05:49,627 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:49,627 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:05:49,828 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:49,828 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:49,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:49,829 INFO L82 PathProgramCache]: Analyzing trace with hash -831232834, now seen corresponding path program 1 times [2021-05-02 22:05:49,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:49,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624912983] [2021-05-02 22:05:49,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:49,838 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:49,839 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947949014] [2021-05-02 22:05:49,839 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 22:05:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:05:49,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 22:05:49,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:50,015 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 22:05:50,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:50,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624912983] [2021-05-02 22:05:50,015 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:50,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947949014] [2021-05-02 22:05:50,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947949014] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:05:50,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:05:50,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 22:05:50,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439493381] [2021-05-02 22:05:50,017 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 22:05:50,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:50,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 22:05:50,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 22:05:50,023 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 22:05:50,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:50,093 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-05-02 22:05:50,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 22:05:50,094 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 22:05:50,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:50,097 INFO L225 Difference]: With dead ends: 34 [2021-05-02 22:05:50,097 INFO L226 Difference]: Without dead ends: 33 [2021-05-02 22:05:50,099 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 64.5ms TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-05-02 22:05:50,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-05-02 22:05:50,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-05-02 22:05:50,111 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 22:05:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-05-02 22:05:50,113 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 20 [2021-05-02 22:05:50,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:50,114 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-05-02 22:05:50,114 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 22:05:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-05-02 22:05:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 22:05:50,115 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:50,116 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 22:05:50,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:50,329 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:50,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:50,329 INFO L82 PathProgramCache]: Analyzing trace with hash -870943837, now seen corresponding path program 2 times [2021-05-02 22:05:50,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:50,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36638290] [2021-05-02 22:05:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:50,339 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:50,340 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235464444] [2021-05-02 22:05:50,340 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 22:05:50,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 22:05:50,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 22:05:50,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 22:05:50,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:50,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:50,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:50,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:50,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:50,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:50,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:50,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:50,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:50,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:50,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:50,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:50,505 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 22:05:50,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:50,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36638290] [2021-05-02 22:05:50,506 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:50,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235464444] [2021-05-02 22:05:50,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235464444] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:05:50,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:05:50,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 22:05:50,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758607145] [2021-05-02 22:05:50,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 22:05:50,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:50,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 22:05:50,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-02 22:05:50,507 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 22:05:50,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:50,547 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-05-02 22:05:50,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 22:05:50,547 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 22:05:50,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:50,548 INFO L225 Difference]: With dead ends: 35 [2021-05-02 22:05:50,548 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 22:05:50,548 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 24.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-02 22:05:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 22:05:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-02 22:05:50,551 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 22:05:50,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-05-02 22:05:50,552 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2021-05-02 22:05:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:50,552 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-05-02 22:05:50,552 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 22:05:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-05-02 22:05:50,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-05-02 22:05:50,553 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:50,553 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:05:50,757 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 22:05:50,757 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:50,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:50,757 INFO L82 PathProgramCache]: Analyzing trace with hash -869871361, now seen corresponding path program 2 times [2021-05-02 22:05:50,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:50,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929688246] [2021-05-02 22:05:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:50,764 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:50,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [595287252] [2021-05-02 22:05:50,764 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 22:05:50,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 22:05:50,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 22:05:50,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 22:05:50,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:50,953 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 22:05:50,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:50,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929688246] [2021-05-02 22:05:50,953 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:50,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595287252] [2021-05-02 22:05:50,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595287252] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:05:50,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:05:50,954 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 22:05:50,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888456581] [2021-05-02 22:05:50,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 22:05:50,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:50,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 22:05:50,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-02 22:05:50,955 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 22:05:51,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:51,047 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2021-05-02 22:05:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 22:05:51,048 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 22:05:51,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:51,049 INFO L225 Difference]: With dead ends: 42 [2021-05-02 22:05:51,049 INFO L226 Difference]: Without dead ends: 41 [2021-05-02 22:05:51,049 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 69.3ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-05-02 22:05:51,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-05-02 22:05:51,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-05-02 22:05:51,052 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 22:05:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-05-02 22:05:51,053 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 28 [2021-05-02 22:05:51,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:51,053 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-05-02 22:05:51,053 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 22:05:51,053 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-05-02 22:05:51,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-05-02 22:05:51,054 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:05:51,054 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 22:05:51,278 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:51,278 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:05:51,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:05:51,279 INFO L82 PathProgramCache]: Analyzing trace with hash 2080181988, now seen corresponding path program 3 times [2021-05-02 22:05:51,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:05:51,279 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370524069] [2021-05-02 22:05:51,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:05:51,289 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:05:51,290 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [422732916] [2021-05-02 22:05:51,290 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 22:05:51,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 22:05:51,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 22:05:51,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 22:05:51,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:05:51,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:51,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:05:51,431 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 22:05:51,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:05:51,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370524069] [2021-05-02 22:05:51,432 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:05:51,432 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422732916] [2021-05-02 22:05:51,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422732916] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 22:05:51,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 22:05:51,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 22:05:51,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727187563] [2021-05-02 22:05:51,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 22:05:51,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:05:51,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 22:05:51,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 22:05:51,433 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 22:05:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:05:51,468 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-05-02 22:05:51,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 22:05:51,468 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 22:05:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:05:51,469 INFO L225 Difference]: With dead ends: 39 [2021-05-02 22:05:51,469 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 22:05:51,469 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 37.3ms TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-05-02 22:05:51,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 22:05:51,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 22:05:51,470 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 22:05:51,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 22:05:51,470 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2021-05-02 22:05:51,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:05:51,470 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 22:05:51,470 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 22:05:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 22:05:51,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 22:05:51,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:05:51,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 10:05:51 BasicIcfg [2021-05-02 22:05:51,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 22:05:51,675 INFO L168 Benchmark]: Toolchain (without parser) took 4096.10 ms. Allocated memory was 196.1 MB in the beginning and 235.9 MB in the end (delta: 39.8 MB). Free memory was 161.4 MB in the beginning and 214.1 MB in the end (delta: -52.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 22:05:51,675 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 196.1 MB. Free memory is still 178.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 22:05:51,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.75 ms. Allocated memory is still 196.1 MB. Free memory was 161.2 MB in the beginning and 180.0 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2021-05-02 22:05:51,676 INFO L168 Benchmark]: Boogie Preprocessor took 32.27 ms. Allocated memory is still 196.1 MB. Free memory was 180.0 MB in the beginning and 178.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 22:05:51,676 INFO L168 Benchmark]: RCFGBuilder took 285.81 ms. Allocated memory is still 196.1 MB. Free memory was 178.5 MB in the beginning and 164.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 22:05:51,676 INFO L168 Benchmark]: IcfgTransformer took 17.07 ms. Allocated memory is still 196.1 MB. Free memory was 164.3 MB in the beginning and 163.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 22:05:51,676 INFO L168 Benchmark]: TraceAbstraction took 3551.14 ms. Allocated memory was 196.1 MB in the beginning and 235.9 MB in the end (delta: 39.8 MB). Free memory was 162.7 MB in the beginning and 214.1 MB in the end (delta: -51.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 22:05:51,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 196.1 MB. Free memory is still 178.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 204.75 ms. Allocated memory is still 196.1 MB. Free memory was 161.2 MB in the beginning and 180.0 MB in the end (delta: -18.8 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.27 ms. Allocated memory is still 196.1 MB. Free memory was 180.0 MB in the beginning and 178.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 285.81 ms. Allocated memory is still 196.1 MB. Free memory was 178.5 MB in the beginning and 164.3 MB in the end (delta: 14.2 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 17.07 ms. Allocated memory is still 196.1 MB. Free memory was 164.3 MB in the beginning and 163.3 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3551.14 ms. Allocated memory was 196.1 MB in the beginning and 235.9 MB in the end (delta: 39.8 MB). Free memory was 162.7 MB in the beginning and 214.1 MB in the end (delta: -51.4 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: 3505.5ms, OverallIterations: 8, TraceHistogramMax: 4, EmptinessCheckTime: 12.7ms, AutomataDifference: 440.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 142 SDtfs, 52 SDslu, 381 SDs, 0 SdLazy, 195 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 177.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 120 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 293.8ms 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: 47.4ms AutomataMinimizationTime, 8 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 83.2ms SsaConstructionTime, 221.6ms SatisfiabilityAnalysisTime, 828.0ms 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...