/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/geo1-ll_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 20:50:27,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 20:50:27,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 20:50:27,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 20:50:27,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 20:50:27,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 20:50:27,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 20:50:27,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 20:50:27,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 20:50:27,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 20:50:27,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 20:50:27,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 20:50:27,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 20:50:27,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 20:50:27,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 20:50:27,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 20:50:27,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 20:50:27,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 20:50:27,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 20:50:27,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 20:50:27,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 20:50:27,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 20:50:27,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 20:50:27,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 20:50:27,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 20:50:27,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 20:50:27,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 20:50:27,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 20:50:27,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 20:50:27,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 20:50:27,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 20:50:27,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 20:50:27,640 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 20:50:27,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 20:50:27,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 20:50:27,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 20:50:27,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 20:50:27,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 20:50:27,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 20:50:27,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 20:50:27,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 20:50:27,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 20:50:27,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 20:50:27,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 20:50:27,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 20:50:27,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 20:50:27,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 20:50:27,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 20:50:27,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 20:50:27,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 20:50:27,649 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 20:50:27,649 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 20:50:27,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 20:50:28,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 20:50:28,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 20:50:28,020 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 20:50:28,021 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 20:50:28,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound20.c [2021-05-02 20:50:28,076 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50f5ef26a/fcee2c706c844f70825b3ffc14daff23/FLAG1ecf2629f [2021-05-02 20:50:28,448 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 20:50:28,448 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-ll_valuebound20.c [2021-05-02 20:50:28,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50f5ef26a/fcee2c706c844f70825b3ffc14daff23/FLAG1ecf2629f [2021-05-02 20:50:28,858 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50f5ef26a/fcee2c706c844f70825b3ffc14daff23 [2021-05-02 20:50:28,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 20:50:28,861 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 20:50:28,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 20:50:28,862 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 20:50:28,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 20:50:28,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:50:28" (1/1) ... [2021-05-02 20:50:28,869 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa06f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:28, skipping insertion in model container [2021-05-02 20:50:28,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 08:50:28" (1/1) ... [2021-05-02 20:50:28,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 20:50:28,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 20:50:28,992 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/geo1-ll_valuebound20.c[546,559] [2021-05-02 20:50:29,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:50:29,014 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 20:50:29,026 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/geo1-ll_valuebound20.c[546,559] [2021-05-02 20:50:29,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 20:50:29,060 INFO L208 MainTranslator]: Completed translation [2021-05-02 20:50:29,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:29 WrapperNode [2021-05-02 20:50:29,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 20:50:29,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 20:50:29,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 20:50:29,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 20:50:29,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:29" (1/1) ... [2021-05-02 20:50:29,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:29" (1/1) ... [2021-05-02 20:50:29,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:29" (1/1) ... [2021-05-02 20:50:29,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:29" (1/1) ... [2021-05-02 20:50:29,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:29" (1/1) ... [2021-05-02 20:50:29,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:29" (1/1) ... [2021-05-02 20:50:29,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:29" (1/1) ... [2021-05-02 20:50:29,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 20:50:29,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 20:50:29,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 20:50:29,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 20:50:29,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:29" (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 20:50:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 20:50:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 20:50:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 20:50:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 20:50:29,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 20:50:29,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 20:50:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 20:50:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 20:50:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 20:50:29,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 20:50:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 20:50:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 20:50:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 20:50:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 20:50:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 20:50:29,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 20:50:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 20:50:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 20:50:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 20:50:29,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 20:50:29,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 20:50:29,447 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 20:50:29,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:50:29 BoogieIcfgContainer [2021-05-02 20:50:29,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 20:50:29,449 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 20:50:29,449 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 20:50:29,450 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 20:50:29,452 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:50:29" (1/1) ... [2021-05-02 20:50:29,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:50:29 BasicIcfg [2021-05-02 20:50:29,467 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 20:50:29,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 20:50:29,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 20:50:29,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 20:50:29,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 08:50:28" (1/4) ... [2021-05-02 20:50:29,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b484989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:50:29, skipping insertion in model container [2021-05-02 20:50:29,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 08:50:29" (2/4) ... [2021-05-02 20:50:29,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b484989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 08:50:29, skipping insertion in model container [2021-05-02 20:50:29,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 08:50:29" (3/4) ... [2021-05-02 20:50:29,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b484989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:50:29, skipping insertion in model container [2021-05-02 20:50:29,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 08:50:29" (4/4) ... [2021-05-02 20:50:29,473 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound20.cJordan [2021-05-02 20:50:29,478 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 20:50:29,481 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 20:50:29,495 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 20:50:29,510 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 20:50:29,510 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 20:50:29,510 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 20:50:29,510 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 20:50:29,511 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 20:50:29,511 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 20:50:29,511 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 20:50:29,511 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 20:50:29,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-02 20:50:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 20:50:29,527 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:50:29,528 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:50:29,528 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:50:29,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:50:29,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1950279688, now seen corresponding path program 1 times [2021-05-02 20:50:29,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:50:29,540 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41972455] [2021-05-02 20:50:29,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:50:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:29,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 20:50:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:29,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 20:50:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:29,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 20:50:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:29,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 20:50:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:29,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 20:50:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-02 20:50:29,811 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:50:29,812 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41972455] [2021-05-02 20:50:29,812 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41972455] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 20:50:29,812 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 20:50:29,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 20:50:29,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667938584] [2021-05-02 20:50:29,817 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 20:50:29,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:50:29,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 20:50:29,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:50:29,833 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:50:29,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:50:29,957 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2021-05-02 20:50:29,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 20:50:29,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 20:50:29,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:50:29,966 INFO L225 Difference]: With dead ends: 32 [2021-05-02 20:50:29,966 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 20:50:29,968 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 20:50:29,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 20:50:29,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-02 20:50:29,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 8 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-02 20:50:30,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-02 20:50:30,001 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2021-05-02 20:50:30,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:50:30,001 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-02 20:50:30,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:50:30,002 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-02 20:50:30,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 20:50:30,004 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:50:30,004 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:50:30,005 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 20:50:30,005 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:50:30,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:50:30,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1010552682, now seen corresponding path program 1 times [2021-05-02 20:50:30,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:50:30,007 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312223167] [2021-05-02 20:50:30,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:50:30,051 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:50:30,052 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402534449] [2021-05-02 20:50:30,052 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 20:50:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:30,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 20:50:30,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:50:30,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,429 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 20:50:30,430 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:50:30,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312223167] [2021-05-02 20:50:30,430 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:50:30,430 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402534449] [2021-05-02 20:50:30,430 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402534449] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:50:30,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:50:30,431 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 20:50:30,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956906468] [2021-05-02 20:50:30,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 20:50:30,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:50:30,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 20:50:30,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-02 20:50:30,433 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:50:30,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:50:30,545 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-05-02 20:50:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 20:50:30,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2021-05-02 20:50:30,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:50:30,548 INFO L225 Difference]: With dead ends: 35 [2021-05-02 20:50:30,548 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 20:50:30,549 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 80.0ms TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 20:50:30,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 20:50:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2021-05-02 20:50:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-02 20:50:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-05-02 20:50:30,554 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 33 [2021-05-02 20:50:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:50:30,555 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-05-02 20:50:30,556 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 20:50:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-05-02 20:50:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-05-02 20:50:30,557 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 20:50:30,557 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 20:50:30,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 20:50:30,785 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 20:50:30,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 20:50:30,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1070211269, now seen corresponding path program 1 times [2021-05-02 20:50:30,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 20:50:30,786 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310992789] [2021-05-02 20:50:30,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 20:50:30,817 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 20:50:30,817 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101739170] [2021-05-02 20:50:30,818 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 20:50:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 20:50:30,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 20:50:30,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 20:50:30,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:30,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 20:50:31,195 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 20:50:31,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 20:50:31,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310992789] [2021-05-02 20:50:31,196 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 20:50:31,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101739170] [2021-05-02 20:50:31,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101739170] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 20:50:31,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 20:50:31,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 20:50:31,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366780583] [2021-05-02 20:50:31,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 20:50:31,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 20:50:31,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 20:50:31,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-05-02 20:50:31,199 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 20:50:31,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 20:50:31,362 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-05-02 20:50:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 20:50:31,363 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2021-05-02 20:50:31,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 20:50:31,364 INFO L225 Difference]: With dead ends: 31 [2021-05-02 20:50:31,364 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 20:50:31,365 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 119.6ms TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-05-02 20:50:31,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 20:50:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 20:50:31,365 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 20:50:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 20:50:31,365 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2021-05-02 20:50:31,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 20:50:31,365 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 20:50:31,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2021-05-02 20:50:31,366 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 20:50:31,366 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 20:50:31,589 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 20:50:31,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 08:50:31 BasicIcfg [2021-05-02 20:50:31,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 20:50:31,593 INFO L168 Benchmark]: Toolchain (without parser) took 2732.05 ms. Allocated memory was 183.5 MB in the beginning and 220.2 MB in the end (delta: 36.7 MB). Free memory was 148.7 MB in the beginning and 169.3 MB in the end (delta: -20.6 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2021-05-02 20:50:31,593 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 183.5 MB. Free memory is still 165.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 20:50:31,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.89 ms. Allocated memory is still 183.5 MB. Free memory was 148.5 MB in the beginning and 138.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-02 20:50:31,594 INFO L168 Benchmark]: Boogie Preprocessor took 88.66 ms. Allocated memory is still 183.5 MB. Free memory was 138.7 MB in the beginning and 167.1 MB in the end (delta: -28.4 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. [2021-05-02 20:50:31,594 INFO L168 Benchmark]: RCFGBuilder took 296.89 ms. Allocated memory is still 183.5 MB. Free memory was 167.1 MB in the beginning and 152.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 20:50:31,594 INFO L168 Benchmark]: IcfgTransformer took 18.51 ms. Allocated memory is still 183.5 MB. Free memory was 152.5 MB in the beginning and 151.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 20:50:31,594 INFO L168 Benchmark]: TraceAbstraction took 2124.14 ms. Allocated memory was 183.5 MB in the beginning and 220.2 MB in the end (delta: 36.7 MB). Free memory was 150.8 MB in the beginning and 169.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 19.4 MB. Max. memory is 8.0 GB. [2021-05-02 20:50:31,595 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 183.5 MB. Free memory is still 165.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 198.89 ms. Allocated memory is still 183.5 MB. Free memory was 148.5 MB in the beginning and 138.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.66 ms. Allocated memory is still 183.5 MB. Free memory was 138.7 MB in the beginning and 167.1 MB in the end (delta: -28.4 MB). Peak memory consumption was 4.6 MB. Max. memory is 8.0 GB. * RCFGBuilder took 296.89 ms. Allocated memory is still 183.5 MB. Free memory was 167.1 MB in the beginning and 152.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 18.51 ms. Allocated memory is still 183.5 MB. Free memory was 152.5 MB in the beginning and 151.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2124.14 ms. Allocated memory was 183.5 MB in the beginning and 220.2 MB in the end (delta: 36.7 MB). Free memory was 150.8 MB in the beginning and 169.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 19.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2081.1ms, OverallIterations: 3, TraceHistogramMax: 4, EmptinessCheckTime: 12.0ms, AutomataDifference: 433.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 68 SDtfs, 44 SDslu, 209 SDs, 0 SdLazy, 177 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 224.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 260.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.9ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 50.9ms SsaConstructionTime, 102.2ms SatisfiabilityAnalysisTime, 775.0ms InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 103 ConstructedInterpolants, 1 QuantifiedInterpolants, 314 SizeOfPredicates, 6 NumberOfNonLiveVariables, 278 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 55/74 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...