/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/bresenham-ll_unwindbound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 07:08:25,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 07:08:25,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 07:08:25,606 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 07:08:25,606 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 07:08:25,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 07:08:25,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 07:08:25,616 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 07:08:25,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 07:08:25,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 07:08:25,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 07:08:25,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 07:08:25,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 07:08:25,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 07:08:25,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 07:08:25,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 07:08:25,628 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 07:08:25,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 07:08:25,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 07:08:25,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 07:08:25,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 07:08:25,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 07:08:25,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 07:08:25,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 07:08:25,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 07:08:25,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 07:08:25,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 07:08:25,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 07:08:25,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 07:08:25,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 07:08:25,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 07:08:25,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 07:08:25,669 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 07:08:25,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 07:08:25,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 07:08:25,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 07:08:25,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 07:08:25,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 07:08:25,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 07:08:25,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 07:08:25,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 07:08:25,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 07:08:25,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 07:08:25,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 07:08:25,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 07:08:25,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 07:08:25,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 07:08:25,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 07:08:25,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 07:08:25,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 07:08:25,673 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 07:08:25,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 07:08:25,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 07:08:25,935 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 07:08:25,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 07:08:25,938 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 07:08:25,938 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 07:08:25,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound2.c [2021-05-06 07:08:25,980 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8ec0000a/ba207013e315412caba81ffd23e6bf10/FLAG902f688b2 [2021-05-06 07:08:26,362 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 07:08:26,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/bresenham-ll_unwindbound2.c [2021-05-06 07:08:26,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8ec0000a/ba207013e315412caba81ffd23e6bf10/FLAG902f688b2 [2021-05-06 07:08:26,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8ec0000a/ba207013e315412caba81ffd23e6bf10 [2021-05-06 07:08:26,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 07:08:26,774 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 07:08:26,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 07:08:26,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 07:08:26,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 07:08:26,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 07:08:26" (1/1) ... [2021-05-06 07:08:26,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@317f18cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:08:26, skipping insertion in model container [2021-05-06 07:08:26,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 07:08:26" (1/1) ... [2021-05-06 07:08:26,786 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 07:08:26,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 07:08:26,911 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/bresenham-ll_unwindbound2.c[597,610] [2021-05-06 07:08:26,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 07:08:26,938 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 07:08:26,991 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/bresenham-ll_unwindbound2.c[597,610] [2021-05-06 07:08:27,010 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 07:08:27,019 INFO L208 MainTranslator]: Completed translation [2021-05-06 07:08:27,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:08:27 WrapperNode [2021-05-06 07:08:27,019 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 07:08:27,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 07:08:27,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 07:08:27,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 07:08:27,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:08:27" (1/1) ... [2021-05-06 07:08:27,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:08:27" (1/1) ... [2021-05-06 07:08:27,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:08:27" (1/1) ... [2021-05-06 07:08:27,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:08:27" (1/1) ... [2021-05-06 07:08:27,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:08:27" (1/1) ... [2021-05-06 07:08:27,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:08:27" (1/1) ... [2021-05-06 07:08:27,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:08:27" (1/1) ... [2021-05-06 07:08:27,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 07:08:27,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 07:08:27,053 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 07:08:27,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 07:08:27,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:08:27" (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 [2021-05-06 07:08:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 07:08:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 07:08:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 07:08:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 07:08:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 07:08:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 07:08:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 07:08:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 07:08:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 07:08:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 07:08:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 07:08:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 07:08:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 07:08:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 07:08:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 07:08:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 07:08:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 07:08:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 07:08:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 07:08:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 07:08:27,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 07:08:27,337 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 07:08:27,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 07:08:27 BoogieIcfgContainer [2021-05-06 07:08:27,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 07:08:27,339 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 07:08:27,339 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 07:08:27,340 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 07:08:27,341 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 07:08:27" (1/1) ... [2021-05-06 07:08:27,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 07:08:27 BasicIcfg [2021-05-06 07:08:27,350 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 07:08:27,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 07:08:27,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 07:08:27,373 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 07:08:27,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 07:08:26" (1/4) ... [2021-05-06 07:08:27,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fe2d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 07:08:27, skipping insertion in model container [2021-05-06 07:08:27,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 07:08:27" (2/4) ... [2021-05-06 07:08:27,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fe2d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 07:08:27, skipping insertion in model container [2021-05-06 07:08:27,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 07:08:27" (3/4) ... [2021-05-06 07:08:27,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29fe2d97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 07:08:27, skipping insertion in model container [2021-05-06 07:08:27,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 07:08:27" (4/4) ... [2021-05-06 07:08:27,375 INFO L111 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound2.cJordan [2021-05-06 07:08:27,379 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 07:08:27,381 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 07:08:27,405 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 07:08:27,421 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 07:08:27,421 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 07:08:27,421 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 07:08:27,421 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 07:08:27,421 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 07:08:27,421 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 07:08:27,421 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 07:08:27,422 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 07:08:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 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) [2021-05-06 07:08:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 07:08:27,441 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:08:27,441 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 07:08:27,441 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:08:27,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:08:27,448 INFO L82 PathProgramCache]: Analyzing trace with hash -498253564, now seen corresponding path program 1 times [2021-05-06 07:08:27,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:08:27,454 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826237766] [2021-05-06 07:08:27,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:08:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:08:27,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 07:08:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:08:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 07:08:27,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:08:27,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826237766] [2021-05-06 07:08:27,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826237766] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 07:08:27,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 07:08:27,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 07:08:27,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893779170] [2021-05-06 07:08:27,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 07:08:27,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:08:27,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 07:08:27,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 07:08:27,683 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 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 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-05-06 07:08:27,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:08:27,736 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-05-06 07:08:27,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 07:08:27,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2021-05-06 07:08:27,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:08:27,742 INFO L225 Difference]: With dead ends: 26 [2021-05-06 07:08:27,742 INFO L226 Difference]: Without dead ends: 21 [2021-05-06 07:08:27,743 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 07:08:27,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-06 07:08:27,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-05-06 07:08:27,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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) [2021-05-06 07:08:27,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-05-06 07:08:27,764 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2021-05-06 07:08:27,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:08:27,764 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-05-06 07:08:27,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-05-06 07:08:27,764 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-05-06 07:08:27,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 07:08:27,765 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:08:27,765 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 07:08:27,765 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 07:08:27,765 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:08:27,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:08:27,766 INFO L82 PathProgramCache]: Analyzing trace with hash -467747580, now seen corresponding path program 1 times [2021-05-06 07:08:27,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:08:27,766 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490173292] [2021-05-06 07:08:27,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:08:27,788 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 07:08:27,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556724945] [2021-05-06 07:08:27,788 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 [2021-05-06 07:08:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:08:27,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 07:08:27,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 07:08:27,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 07:08:27,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:08:27,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490173292] [2021-05-06 07:08:27,992 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 07:08:27,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556724945] [2021-05-06 07:08:27,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556724945] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 07:08:27,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 07:08:27,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 07:08:27,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046354975] [2021-05-06 07:08:27,994 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 07:08:27,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:08:27,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 07:08:27,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 07:08:27,994 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2021-05-06 07:08:28,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:08:28,052 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-05-06 07:08:28,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 07:08:28,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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 [2021-05-06 07:08:28,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:08:28,053 INFO L225 Difference]: With dead ends: 32 [2021-05-06 07:08:28,053 INFO L226 Difference]: Without dead ends: 29 [2021-05-06 07:08:28,054 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 43.0ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-06 07:08:28,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-05-06 07:08:28,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-05-06 07:08:28,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 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) [2021-05-06 07:08:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-05-06 07:08:28,057 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 12 [2021-05-06 07:08:28,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:08:28,057 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-05-06 07:08:28,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 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) [2021-05-06 07:08:28,058 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-05-06 07:08:28,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 07:08:28,058 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:08:28,058 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 07:08:28,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 07:08:28,275 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:08:28,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:08:28,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1909475431, now seen corresponding path program 1 times [2021-05-06 07:08:28,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:08:28,275 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016780532] [2021-05-06 07:08:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:08:28,293 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 07:08:28,294 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465218335] [2021-05-06 07:08:28,294 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 [2021-05-06 07:08:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:08:28,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 07:08:28,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 07:08:28,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:28,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 07:08:28,516 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:08:28,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016780532] [2021-05-06 07:08:28,517 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 07:08:28,517 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465218335] [2021-05-06 07:08:28,517 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465218335] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 07:08:28,517 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 07:08:28,517 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 07:08:28,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907769633] [2021-05-06 07:08:28,517 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 07:08:28,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:08:28,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 07:08:28,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-06 07:08:28,518 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 07:08:28,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:08:28,633 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2021-05-06 07:08:28,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 07:08:28,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-05-06 07:08:28,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:08:28,634 INFO L225 Difference]: With dead ends: 42 [2021-05-06 07:08:28,634 INFO L226 Difference]: Without dead ends: 39 [2021-05-06 07:08:28,635 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 80.6ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-06 07:08:28,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-05-06 07:08:28,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-05-06 07:08:28,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 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) [2021-05-06 07:08:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-05-06 07:08:28,638 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 22 [2021-05-06 07:08:28,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:08:28,638 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-05-06 07:08:28,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 07:08:28,639 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-05-06 07:08:28,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 07:08:28,639 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:08:28,639 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 07:08:28,856 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 07:08:28,856 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:08:28,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:08:28,856 INFO L82 PathProgramCache]: Analyzing trace with hash -642681530, now seen corresponding path program 1 times [2021-05-06 07:08:28,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:08:28,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211606611] [2021-05-06 07:08:28,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:08:28,863 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 07:08:28,863 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [266777314] [2021-05-06 07:08:28,863 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 [2021-05-06 07:08:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:08:28,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-06 07:08:28,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 07:08:29,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 07:08:29,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:08:29,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211606611] [2021-05-06 07:08:29,047 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 07:08:29,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266777314] [2021-05-06 07:08:29,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266777314] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 07:08:29,047 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 07:08:29,047 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 07:08:29,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764561643] [2021-05-06 07:08:29,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 07:08:29,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:08:29,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 07:08:29,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-06 07:08:29,048 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 07:08:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:08:29,150 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2021-05-06 07:08:29,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 07:08:29,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-05-06 07:08:29,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:08:29,152 INFO L225 Difference]: With dead ends: 51 [2021-05-06 07:08:29,152 INFO L226 Difference]: Without dead ends: 51 [2021-05-06 07:08:29,152 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-05-06 07:08:29,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-05-06 07:08:29,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2021-05-06 07:08:29,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 07:08:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 51 transitions. [2021-05-06 07:08:29,156 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 51 transitions. Word has length 22 [2021-05-06 07:08:29,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:08:29,156 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 51 transitions. [2021-05-06 07:08:29,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 07:08:29,156 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 51 transitions. [2021-05-06 07:08:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 07:08:29,157 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:08:29,157 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 07:08:29,373 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 07:08:29,373 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:08:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:08:29,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1519292561, now seen corresponding path program 1 times [2021-05-06 07:08:29,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:08:29,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909167122] [2021-05-06 07:08:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:08:29,380 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 07:08:29,380 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666451647] [2021-05-06 07:08:29,380 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 [2021-05-06 07:08:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:08:29,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 07:08:29,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 07:08:29,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 07:08:29,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:08:29,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909167122] [2021-05-06 07:08:29,515 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 07:08:29,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666451647] [2021-05-06 07:08:29,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666451647] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 07:08:29,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 07:08:29,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-06 07:08:29,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974009878] [2021-05-06 07:08:29,515 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 07:08:29,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:08:29,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 07:08:29,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-06 07:08:29,516 INFO L87 Difference]: Start difference. First operand 46 states and 51 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-05-06 07:08:29,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:08:29,540 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-05-06 07:08:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 07:08:29,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 23 [2021-05-06 07:08:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:08:29,543 INFO L225 Difference]: With dead ends: 46 [2021-05-06 07:08:29,543 INFO L226 Difference]: Without dead ends: 46 [2021-05-06 07:08:29,543 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 13.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 07:08:29,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-05-06 07:08:29,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-05-06 07:08:29,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 07:08:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-05-06 07:08:29,552 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 23 [2021-05-06 07:08:29,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:08:29,552 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-05-06 07:08:29,552 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-05-06 07:08:29,552 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-05-06 07:08:29,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 07:08:29,553 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:08:29,553 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 07:08:29,771 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 07:08:29,772 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:08:29,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:08:29,772 INFO L82 PathProgramCache]: Analyzing trace with hash -2036751370, now seen corresponding path program 1 times [2021-05-06 07:08:29,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:08:29,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505918583] [2021-05-06 07:08:29,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:08:29,779 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 07:08:29,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523885528] [2021-05-06 07:08:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-06 07:08:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:08:29,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-06 07:08:29,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 07:08:29,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:29,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:30,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 07:08:30,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:08:30,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505918583] [2021-05-06 07:08:30,029 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 07:08:30,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523885528] [2021-05-06 07:08:30,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523885528] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 07:08:30,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 07:08:30,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-06 07:08:30,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53715687] [2021-05-06 07:08:30,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 07:08:30,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:08:30,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 07:08:30,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-05-06 07:08:30,030 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 14 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2021-05-06 07:08:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:08:30,243 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2021-05-06 07:08:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 07:08:30,244 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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 29 [2021-05-06 07:08:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:08:30,244 INFO L225 Difference]: With dead ends: 55 [2021-05-06 07:08:30,244 INFO L226 Difference]: Without dead ends: 49 [2021-05-06 07:08:30,245 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 185.9ms TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-05-06 07:08:30,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-05-06 07:08:30,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2021-05-06 07:08:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 28 states have internal predecessors, (32), 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) [2021-05-06 07:08:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-05-06 07:08:30,247 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 29 [2021-05-06 07:08:30,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:08:30,247 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-05-06 07:08:30,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 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) [2021-05-06 07:08:30,248 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-05-06 07:08:30,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-06 07:08:30,248 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:08:30,248 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 07:08:30,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-06 07:08:30,465 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:08:30,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:08:30,466 INFO L82 PathProgramCache]: Analyzing trace with hash 398537738, now seen corresponding path program 2 times [2021-05-06 07:08:30,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:08:30,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565399742] [2021-05-06 07:08:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:08:30,472 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 07:08:30,472 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1044696386] [2021-05-06 07:08:30,472 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 [2021-05-06 07:08:30,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 07:08:30,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 07:08:30,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 07:08:30,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 07:08:30,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:30,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:30,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:30,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:30,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:30,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:30,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:30,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:30,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:30,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:30,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 07:08:30,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:08:30,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565399742] [2021-05-06 07:08:30,618 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 07:08:30,619 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044696386] [2021-05-06 07:08:30,619 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044696386] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 07:08:30,619 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 07:08:30,619 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 07:08:30,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346724145] [2021-05-06 07:08:30,619 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 07:08:30,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:08:30,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 07:08:30,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 07:08:30,620 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-05-06 07:08:30,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:08:30,647 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2021-05-06 07:08:30,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 07:08:30,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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 32 [2021-05-06 07:08:30,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:08:30,648 INFO L225 Difference]: With dead ends: 36 [2021-05-06 07:08:30,648 INFO L226 Difference]: Without dead ends: 34 [2021-05-06 07:08:30,648 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-05-06 07:08:30,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-05-06 07:08:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-05-06 07:08:30,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 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) [2021-05-06 07:08:30,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-05-06 07:08:30,650 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 32 [2021-05-06 07:08:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:08:30,650 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-05-06 07:08:30,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 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) [2021-05-06 07:08:30,651 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-05-06 07:08:30,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-06 07:08:30,651 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 07:08:30,651 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 07:08:30,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 07:08:30,867 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 07:08:30,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 07:08:30,868 INFO L82 PathProgramCache]: Analyzing trace with hash -562648499, now seen corresponding path program 1 times [2021-05-06 07:08:30,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 07:08:30,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551583652] [2021-05-06 07:08:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 07:08:30,873 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 07:08:30,873 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1925648151] [2021-05-06 07:08:30,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-06 07:08:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 07:08:30,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-06 07:08:30,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 07:08:31,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:31,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:31,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:31,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 07:08:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-06 07:08:31,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 07:08:31,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551583652] [2021-05-06 07:08:31,084 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 07:08:31,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925648151] [2021-05-06 07:08:31,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925648151] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 07:08:31,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 07:08:31,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-06 07:08:31,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267223215] [2021-05-06 07:08:31,084 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-06 07:08:31,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 07:08:31,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-06 07:08:31,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-05-06 07:08:31,085 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 13 states, 10 states have (on average 2.5) internal successors, (25), 12 states have internal predecessors, (25), 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) [2021-05-06 07:08:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 07:08:31,261 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-05-06 07:08:31,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-06 07:08:31,262 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 2.5) internal successors, (25), 12 states have internal predecessors, (25), 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 33 [2021-05-06 07:08:31,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 07:08:31,262 INFO L225 Difference]: With dead ends: 44 [2021-05-06 07:08:31,262 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 07:08:31,262 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 170.0ms TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-05-06 07:08:31,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 07:08:31,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 07:08:31,263 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) [2021-05-06 07:08:31,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 07:08:31,263 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-05-06 07:08:31,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 07:08:31,263 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 07:08:31,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 10 states have (on average 2.5) internal successors, (25), 12 states have internal predecessors, (25), 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) [2021-05-06 07:08:31,263 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 07:08:31,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 07:08:31,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 07:08:31,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 07:08:31 BasicIcfg [2021-05-06 07:08:31,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 07:08:31,483 INFO L168 Benchmark]: Toolchain (without parser) took 4708.90 ms. Allocated memory was 180.4 MB in the beginning and 239.1 MB in the end (delta: 58.7 MB). Free memory was 144.5 MB in the beginning and 91.6 MB in the end (delta: 52.9 MB). Peak memory consumption was 112.8 MB. Max. memory is 8.0 GB. [2021-05-06 07:08:31,483 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 180.4 MB. Free memory was 161.5 MB in the beginning and 161.3 MB in the end (delta: 216.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 07:08:31,483 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.92 ms. Allocated memory is still 180.4 MB. Free memory was 144.3 MB in the beginning and 163.4 MB in the end (delta: -19.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 07:08:31,483 INFO L168 Benchmark]: Boogie Preprocessor took 31.80 ms. Allocated memory is still 180.4 MB. Free memory was 163.4 MB in the beginning and 161.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 07:08:31,483 INFO L168 Benchmark]: RCFGBuilder took 285.90 ms. Allocated memory is still 180.4 MB. Free memory was 161.9 MB in the beginning and 146.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-06 07:08:31,483 INFO L168 Benchmark]: IcfgTransformer took 11.00 ms. Allocated memory is still 180.4 MB. Free memory was 146.1 MB in the beginning and 145.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 07:08:31,483 INFO L168 Benchmark]: TraceAbstraction took 4131.43 ms. Allocated memory was 180.4 MB in the beginning and 239.1 MB in the end (delta: 58.7 MB). Free memory was 144.5 MB in the beginning and 91.6 MB in the end (delta: 53.0 MB). Peak memory consumption was 112.7 MB. Max. memory is 8.0 GB. [2021-05-06 07:08:31,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 180.4 MB. Free memory was 161.5 MB in the beginning and 161.3 MB in the end (delta: 216.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 241.92 ms. Allocated memory is still 180.4 MB. Free memory was 144.3 MB in the beginning and 163.4 MB in the end (delta: -19.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.80 ms. Allocated memory is still 180.4 MB. Free memory was 163.4 MB in the beginning and 161.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 285.90 ms. Allocated memory is still 180.4 MB. Free memory was 161.9 MB in the beginning and 146.1 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 11.00 ms. Allocated memory is still 180.4 MB. Free memory was 146.1 MB in the beginning and 145.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4131.43 ms. Allocated memory was 180.4 MB in the beginning and 239.1 MB in the end (delta: 58.7 MB). Free memory was 144.5 MB in the beginning and 91.6 MB in the end (delta: 53.0 MB). Peak memory consumption was 112.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4059.9ms, OverallIterations: 8, TraceHistogramMax: 3, EmptinessCheckTime: 13.0ms, AutomataDifference: 801.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 169 SDtfs, 93 SDslu, 681 SDs, 0 SdLazy, 716 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 371.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 190 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 632.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=4, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 35.6ms AutomataMinimizationTime, 8 MinimizatonAttempts, 19 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 75.6ms SsaConstructionTime, 187.7ms SatisfiabilityAnalysisTime, 1107.7ms InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 1115 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1003 ConjunctsInSsa, 131 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 38/64 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...