/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/freire1_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 08:27:37,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 08:27:37,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 08:27:37,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 08:27:37,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 08:27:37,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 08:27:37,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 08:27:37,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 08:27:37,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 08:27:37,671 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 08:27:37,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 08:27:37,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 08:27:37,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 08:27:37,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 08:27:37,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 08:27:37,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 08:27:37,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 08:27:37,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 08:27:37,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 08:27:37,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 08:27:37,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 08:27:37,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 08:27:37,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 08:27:37,689 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 08:27:37,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 08:27:37,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 08:27:37,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 08:27:37,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 08:27:37,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 08:27:37,707 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 08:27:37,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 08:27:37,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 08:27:37,710 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 08:27:37,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 08:27:37,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 08:27:37,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 08:27:37,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 08:27:37,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 08:27:37,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 08:27:37,711 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 08:27:37,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 08:27:37,711 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 08:27:37,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 08:27:37,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 08:27:37,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 08:27:37,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 08:27:37,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 08:27:37,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 08:27:37,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 08:27:37,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 08:27:37,713 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 08:27:37,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 08:27:37,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 08:27:37,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 08:27:37,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 08:27:37,986 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 08:27:37,987 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 08:27:37,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/freire1_valuebound1.c [2021-05-06 08:27:38,040 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0194f702/a3826ec634044b088b90d3d1b64bc97a/FLAG9a39effcf [2021-05-06 08:27:38,423 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 08:27:38,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire1_valuebound1.c [2021-05-06 08:27:38,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0194f702/a3826ec634044b088b90d3d1b64bc97a/FLAG9a39effcf [2021-05-06 08:27:38,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0194f702/a3826ec634044b088b90d3d1b64bc97a [2021-05-06 08:27:38,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 08:27:38,851 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 08:27:38,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 08:27:38,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 08:27:38,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 08:27:38,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:27:38" (1/1) ... [2021-05-06 08:27:38,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df019b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:38, skipping insertion in model container [2021-05-06 08:27:38,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:27:38" (1/1) ... [2021-05-06 08:27:38,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 08:27:38,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 08:27:38,951 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/freire1_valuebound1.c[712,725] [2021-05-06 08:27:38,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:27:38,974 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 08:27:38,983 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/freire1_valuebound1.c[712,725] [2021-05-06 08:27:38,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:27:38,995 INFO L208 MainTranslator]: Completed translation [2021-05-06 08:27:38,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:38 WrapperNode [2021-05-06 08:27:38,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 08:27:38,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 08:27:38,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 08:27:38,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 08:27:39,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:38" (1/1) ... [2021-05-06 08:27:39,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:38" (1/1) ... [2021-05-06 08:27:39,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:38" (1/1) ... [2021-05-06 08:27:39,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:38" (1/1) ... [2021-05-06 08:27:39,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:38" (1/1) ... [2021-05-06 08:27:39,036 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:38" (1/1) ... [2021-05-06 08:27:39,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:38" (1/1) ... [2021-05-06 08:27:39,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 08:27:39,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 08:27:39,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 08:27:39,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 08:27:39,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:38" (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 08:27:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 08:27:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 08:27:39,094 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 08:27:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 08:27:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 08:27:39,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 08:27:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 08:27:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 08:27:39,095 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 08:27:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 08:27:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-05-06 08:27:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 08:27:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 08:27:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 08:27:39,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 08:27:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 08:27:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 08:27:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 08:27:39,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 08:27:39,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 08:27:39,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 08:27:39,323 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 08:27:39,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:27:39 BoogieIcfgContainer [2021-05-06 08:27:39,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 08:27:39,324 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 08:27:39,324 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 08:27:39,325 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 08:27:39,326 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:27:39" (1/1) ... [2021-05-06 08:27:39,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:27:39 BasicIcfg [2021-05-06 08:27:39,351 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 08:27:39,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 08:27:39,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 08:27:39,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 08:27:39,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 08:27:38" (1/4) ... [2021-05-06 08:27:39,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23270117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:27:39, skipping insertion in model container [2021-05-06 08:27:39,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:27:38" (2/4) ... [2021-05-06 08:27:39,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23270117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:27:39, skipping insertion in model container [2021-05-06 08:27:39,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:27:39" (3/4) ... [2021-05-06 08:27:39,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23270117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:27:39, skipping insertion in model container [2021-05-06 08:27:39,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:27:39" (4/4) ... [2021-05-06 08:27:39,356 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound1.cJordan [2021-05-06 08:27:39,360 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 08:27:39,364 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 08:27:39,375 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 08:27:39,396 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 08:27:39,396 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 08:27:39,396 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 08:27:39,396 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 08:27:39,396 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 08:27:39,396 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 08:27:39,396 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 08:27:39,396 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 08:27:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 08:27:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 08:27:39,414 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:27:39,414 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:27:39,415 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:27:39,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:27:39,419 INFO L82 PathProgramCache]: Analyzing trace with hash 409333534, now seen corresponding path program 1 times [2021-05-06 08:27:39,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:27:39,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214051835] [2021-05-06 08:27:39,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:27:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:27:39,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 08:27:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:27:39,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 08:27:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:27:39,651 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 08:27:39,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:27:39,652 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214051835] [2021-05-06 08:27:39,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214051835] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:27:39,653 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:27:39,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 08:27:39,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501897966] [2021-05-06 08:27:39,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 08:27:39,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:27:39,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 08:27:39,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 08:27:39,669 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 08:27:39,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:27:39,736 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-05-06 08:27:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 08:27:39,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-06 08:27:39,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:27:39,742 INFO L225 Difference]: With dead ends: 27 [2021-05-06 08:27:39,742 INFO L226 Difference]: Without dead ends: 22 [2021-05-06 08:27:39,743 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 08:27:39,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-06 08:27:39,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-05-06 08:27:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 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 08:27:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-05-06 08:27:39,765 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2021-05-06 08:27:39,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:27:39,765 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-05-06 08:27:39,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 08:27:39,765 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-05-06 08:27:39,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 08:27:39,766 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:27:39,766 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:27:39,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 08:27:39,766 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:27:39,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:27:39,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1396244096, now seen corresponding path program 1 times [2021-05-06 08:27:39,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:27:39,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237376202] [2021-05-06 08:27:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:27:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 08:27:39,790 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 08:27:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 08:27:39,807 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 08:27:39,821 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-06 08:27:39,821 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 08:27:39,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 08:27:39,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:27:39 BasicIcfg [2021-05-06 08:27:39,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 08:27:39,838 INFO L168 Benchmark]: Toolchain (without parser) took 986.87 ms. Allocated memory is still 184.5 MB. Free memory was 149.3 MB in the beginning and 119.7 MB in the end (delta: 29.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 8.0 GB. [2021-05-06 08:27:39,838 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 184.5 MB. Free memory is still 165.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 08:27:39,839 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.03 ms. Allocated memory is still 184.5 MB. Free memory was 148.9 MB in the beginning and 167.3 MB in the end (delta: -18.3 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. [2021-05-06 08:27:39,839 INFO L168 Benchmark]: Boogie Preprocessor took 41.89 ms. Allocated memory is still 184.5 MB. Free memory was 167.3 MB in the beginning and 168.4 MB in the end (delta: -1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 08:27:39,839 INFO L168 Benchmark]: RCFGBuilder took 285.21 ms. Allocated memory is still 184.5 MB. Free memory was 168.4 MB in the beginning and 154.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 08:27:39,840 INFO L168 Benchmark]: IcfgTransformer took 26.95 ms. Allocated memory is still 184.5 MB. Free memory was 154.3 MB in the beginning and 152.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 08:27:39,840 INFO L168 Benchmark]: TraceAbstraction took 485.03 ms. Allocated memory is still 184.5 MB. Free memory was 152.8 MB in the beginning and 119.7 MB in the end (delta: 33.0 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. [2021-05-06 08:27:39,842 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 184.5 MB. Free memory is still 165.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 140.03 ms. Allocated memory is still 184.5 MB. Free memory was 148.9 MB in the beginning and 167.3 MB in the end (delta: -18.3 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.89 ms. Allocated memory is still 184.5 MB. Free memory was 167.3 MB in the beginning and 168.4 MB in the end (delta: -1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 285.21 ms. Allocated memory is still 184.5 MB. Free memory was 168.4 MB in the beginning and 154.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 26.95 ms. Allocated memory is still 184.5 MB. Free memory was 154.3 MB in the beginning and 152.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 485.03 ms. Allocated memory is still 184.5 MB. Free memory was 152.8 MB in the beginning and 119.7 MB in the end (delta: 33.0 MB). Peak memory consumption was 32.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=1) VAL [\old(cond)=1] [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=1) VAL [a=53] [L29] x = a / 2.0 [L30] r = 0 VAL [a=53, r=0] [L32] COND TRUE 1 VAL [a=53, r=0] [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 428.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.0ms, AutomataDifference: 84.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 24 SDtfs, 15 SDslu, 3 SDs, 0 SdLazy, 6 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 37.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 10.5ms SsaConstructionTime, 50.1ms SatisfiabilityAnalysisTime, 141.7ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 46 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...