/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 08:23:42,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 08:23:42,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 08:23:42,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 08:23:42,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 08:23:42,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 08:23:42,113 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 08:23:42,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 08:23:42,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 08:23:42,115 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 08:23:42,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 08:23:42,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 08:23:42,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 08:23:42,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 08:23:42,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 08:23:42,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 08:23:42,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 08:23:42,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 08:23:42,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 08:23:42,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 08:23:42,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 08:23:42,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 08:23:42,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 08:23:42,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 08:23:42,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 08:23:42,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 08:23:42,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 08:23:42,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 08:23:42,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 08:23:42,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 08:23:42,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 08:23:42,144 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 08:23:42,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 08:23:42,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 08:23:42,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 08:23:42,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 08:23:42,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 08:23:42,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 08:23:42,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 08:23:42,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 08:23:42,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 08:23:42,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 08:23:42,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 08:23:42,146 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 08:23:42,146 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 08:23:42,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 08:23:42,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 08:23:42,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 08:23:42,489 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 08:23:42,490 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 08:23:42,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound50.c [2021-05-01 08:23:42,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d91d01e7a/4de81a8a743f4767919b68636f085f71/FLAG35b21bb6c [2021-05-01 08:23:43,018 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 08:23:43,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo2-ll_valuebound50.c [2021-05-01 08:23:43,026 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d91d01e7a/4de81a8a743f4767919b68636f085f71/FLAG35b21bb6c [2021-05-01 08:23:43,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d91d01e7a/4de81a8a743f4767919b68636f085f71 [2021-05-01 08:23:43,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 08:23:43,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 08:23:43,441 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 08:23:43,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 08:23:43,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 08:23:43,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:23:43" (1/1) ... [2021-05-01 08:23:43,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1ee276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:43, skipping insertion in model container [2021-05-01 08:23:43,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 08:23:43" (1/1) ... [2021-05-01 08:23:43,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 08:23:43,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 08:23:43,618 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/geo2-ll_valuebound50.c[525,538] [2021-05-01 08:23:43,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:23:43,638 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 08:23:43,650 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/geo2-ll_valuebound50.c[525,538] [2021-05-01 08:23:43,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 08:23:43,667 INFO L208 MainTranslator]: Completed translation [2021-05-01 08:23:43,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:43 WrapperNode [2021-05-01 08:23:43,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 08:23:43,669 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 08:23:43,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 08:23:43,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 08:23:43,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:43" (1/1) ... [2021-05-01 08:23:43,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:43" (1/1) ... [2021-05-01 08:23:43,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:43" (1/1) ... [2021-05-01 08:23:43,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:43" (1/1) ... [2021-05-01 08:23:43,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:43" (1/1) ... [2021-05-01 08:23:43,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:43" (1/1) ... [2021-05-01 08:23:43,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:43" (1/1) ... [2021-05-01 08:23:43,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 08:23:43,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 08:23:43,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 08:23:43,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 08:23:43,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:43" (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 [2021-05-01 08:23:43,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 08:23:43,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 08:23:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 08:23:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-01 08:23:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 08:23:43,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 08:23:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 08:23:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 08:23:43,844 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 08:23:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 08:23:43,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 08:23:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-01 08:23:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 08:23:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 08:23:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 08:23:43,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 08:23:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 08:23:43,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 08:23:43,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 08:23:43,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 08:23:44,116 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 08:23:44,116 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-01 08:23:44,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:23:44 BoogieIcfgContainer [2021-05-01 08:23:44,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 08:23:44,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 08:23:44,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 08:23:44,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 08:23:44,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 08:23:43" (1/3) ... [2021-05-01 08:23:44,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b641342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:23:44, skipping insertion in model container [2021-05-01 08:23:44,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 08:23:43" (2/3) ... [2021-05-01 08:23:44,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b641342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 08:23:44, skipping insertion in model container [2021-05-01 08:23:44,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 08:23:44" (3/3) ... [2021-05-01 08:23:44,141 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound50.c [2021-05-01 08:23:44,147 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 08:23:44,152 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 08:23:44,182 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 08:23:44,201 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 08:23:44,201 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 08:23:44,201 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 08:23:44,201 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 08:23:44,201 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 08:23:44,202 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 08:23:44,202 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 08:23:44,202 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 08:23:44,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-01 08:23:44,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-01 08:23:44,242 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:23:44,243 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:23:44,243 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:23:44,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:23:44,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1276201559, now seen corresponding path program 1 times [2021-05-01 08:23:44,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:23:44,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705924967] [2021-05-01 08:23:44,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:23:44,357 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:23:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:23:44,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:44,500 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:44,501 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:44,502 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:44,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 08:23:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:23:44,571 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:44,572 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:44,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-01 08:23:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:23:44,577 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:44,578 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:44,579 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:44,579 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:44,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-01 08:23:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 08:23:44,583 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:44,584 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:44,585 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 08:23:44,585 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 08:23:44,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-01 08:23:44,588 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 08:23:44,588 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705924967] [2021-05-01 08:23:44,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [705924967] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 08:23:44,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 08:23:44,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-01 08:23:44,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518443270] [2021-05-01 08:23:44,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-01 08:23:44,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 08:23:44,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-01 08:23:44,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:23:44,608 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:23:44,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 08:23:44,714 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2021-05-01 08:23:44,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-01 08:23:44,716 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-01 08:23:44,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 08:23:44,724 INFO L225 Difference]: With dead ends: 51 [2021-05-01 08:23:44,725 INFO L226 Difference]: Without dead ends: 24 [2021-05-01 08:23:44,729 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-01 08:23:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-01 08:23:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-05-01 08:23:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-01 08:23:44,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2021-05-01 08:23:44,787 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 23 [2021-05-01 08:23:44,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 08:23:44,788 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2021-05-01 08:23:44,788 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, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-01 08:23:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2021-05-01 08:23:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-01 08:23:44,789 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 08:23:44,790 INFO L519 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 08:23:44,790 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 08:23:44,790 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 08:23:44,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 08:23:44,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1874219407, now seen corresponding path program 1 times [2021-05-01 08:23:44,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 08:23:44,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527284479] [2021-05-01 08:23:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 08:23:44,794 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 08:23:44,808 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-05-01 08:23:44,809 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 08:23:44,812 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 08:23:44,826 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-05-01 08:23:44,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 08:23:44 BoogieIcfgContainer [2021-05-01 08:23:44,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 08:23:44,828 INFO L168 Benchmark]: Toolchain (without parser) took 1404.71 ms. Allocated memory is still 183.5 MB. Free memory was 149.3 MB in the beginning and 117.3 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:23:44,831 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 183.5 MB. Free memory is still 165.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 08:23:44,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.01 ms. Allocated memory is still 183.5 MB. Free memory was 149.1 MB in the beginning and 139.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-05-01 08:23:44,834 INFO L168 Benchmark]: Boogie Preprocessor took 30.37 ms. Allocated memory is still 183.5 MB. Free memory was 139.3 MB in the beginning and 137.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 08:23:44,835 INFO L168 Benchmark]: RCFGBuilder took 418.38 ms. Allocated memory is still 183.5 MB. Free memory was 137.7 MB in the beginning and 154.0 MB in the end (delta: -16.2 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. [2021-05-01 08:23:44,836 INFO L168 Benchmark]: TraceAbstraction took 706.64 ms. Allocated memory is still 183.5 MB. Free memory was 153.5 MB in the beginning and 117.3 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2021-05-01 08:23:44,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 183.5 MB. Free memory is still 165.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 227.01 ms. Allocated memory is still 183.5 MB. Free memory was 149.1 MB in the beginning and 139.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.37 ms. Allocated memory is still 183.5 MB. Free memory was 139.3 MB in the beginning and 137.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 418.38 ms. Allocated memory is still 183.5 MB. Free memory was 137.7 MB in the beginning and 154.0 MB in the end (delta: -16.2 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 706.64 ms. Allocated memory is still 183.5 MB. Free memory was 153.5 MB in the beginning and 117.3 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L24] int z, k; [L25] long long x, y, c; [L26] z = __VERIFIER_nondet_int() [L27] CALL assume_abort_if_not(z>=0 && z<=50) [L12] COND FALSE !(!cond) [L27] RET assume_abort_if_not(z>=0 && z<=50) [L28] k = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(k>=0 && k<=50) [L12] COND FALSE !(!cond) [L29] RET assume_abort_if_not(k>=0 && k<=50) [L31] x = 1 [L32] y = 1 [L33] c = 1 [L35] COND TRUE 1 [L36] CALL __VERIFIER_assert(1 + x*z - x - z*y == 0) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 615.0ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 22.3ms, AutomataDifference: 132.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 26 SDtfs, 16 SDslu, 3 SDs, 0 SdLazy, 7 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 40.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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: 45.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...