/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/fermat2-ll_unwindbound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 08:25:45,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 08:25:45,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 08:25:45,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 08:25:45,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 08:25:45,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 08:25:45,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 08:25:45,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 08:25:45,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 08:25:45,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 08:25:45,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 08:25:45,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 08:25:45,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 08:25:45,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 08:25:45,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 08:25:45,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 08:25:45,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 08:25:45,458 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 08:25:45,459 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 08:25:45,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 08:25:45,461 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 08:25:45,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 08:25:45,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 08:25:45,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 08:25:45,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 08:25:45,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 08:25:45,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 08:25:45,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 08:25:45,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 08:25:45,479 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 08:25:45,480 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 08:25:45,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 08:25:45,481 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 08:25:45,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 08:25:45,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 08:25:45,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 08:25:45,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 08:25:45,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 08:25:45,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 08:25:45,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 08:25:45,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 08:25:45,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 08:25:45,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 08:25:45,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 08:25:45,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 08:25:45,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 08:25:45,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 08:25:45,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 08:25:45,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 08:25:45,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 08:25:45,483 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 08:25:45,483 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 08:25:45,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 08:25:45,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 08:25:45,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 08:25:45,740 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 08:25:45,741 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 08:25:45,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound10.c [2021-05-06 08:25:45,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef796b69/96cc4bbf654545e481dd45807ffee841/FLAG0823d882a [2021-05-06 08:25:46,242 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 08:25:46,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/fermat2-ll_unwindbound10.c [2021-05-06 08:25:46,259 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef796b69/96cc4bbf654545e481dd45807ffee841/FLAG0823d882a [2021-05-06 08:25:46,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef796b69/96cc4bbf654545e481dd45807ffee841 [2021-05-06 08:25:46,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 08:25:46,283 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 08:25:46,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 08:25:46,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 08:25:46,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 08:25:46,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:25:46" (1/1) ... [2021-05-06 08:25:46,288 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302347a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:46, skipping insertion in model container [2021-05-06 08:25:46,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 08:25:46" (1/1) ... [2021-05-06 08:25:46,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 08:25:46,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 08:25:46,446 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/fermat2-ll_unwindbound10.c[524,537] [2021-05-06 08:25:46,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:25:46,467 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 08:25:46,478 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/fermat2-ll_unwindbound10.c[524,537] [2021-05-06 08:25:46,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 08:25:46,533 INFO L208 MainTranslator]: Completed translation [2021-05-06 08:25:46,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:46 WrapperNode [2021-05-06 08:25:46,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 08:25:46,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 08:25:46,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 08:25:46,536 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 08:25:46,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:46" (1/1) ... [2021-05-06 08:25:46,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:46" (1/1) ... [2021-05-06 08:25:46,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:46" (1/1) ... [2021-05-06 08:25:46,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:46" (1/1) ... [2021-05-06 08:25:46,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:46" (1/1) ... [2021-05-06 08:25:46,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:46" (1/1) ... [2021-05-06 08:25:46,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:46" (1/1) ... [2021-05-06 08:25:46,573 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 08:25:46,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 08:25:46,574 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 08:25:46,574 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 08:25:46,575 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:46" (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 08:25:46,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 08:25:46,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 08:25:46,649 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 08:25:46,649 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 08:25:46,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 08:25:46,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 08:25:46,649 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 08:25:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 08:25:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 08:25:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 08:25:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 08:25:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 08:25:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 08:25:46,650 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 08:25:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 08:25:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 08:25:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 08:25:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 08:25:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 08:25:46,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 08:25:46,854 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 08:25:46,854 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 08:25:46,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:25:46 BoogieIcfgContainer [2021-05-06 08:25:46,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 08:25:46,855 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 08:25:46,856 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 08:25:46,856 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 08:25:46,858 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:25:46" (1/1) ... [2021-05-06 08:25:46,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:25:46 BasicIcfg [2021-05-06 08:25:46,867 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 08:25:46,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 08:25:46,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 08:25:46,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 08:25:46,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 08:25:46" (1/4) ... [2021-05-06 08:25:46,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42952584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:25:46, skipping insertion in model container [2021-05-06 08:25:46,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 08:25:46" (2/4) ... [2021-05-06 08:25:46,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42952584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 08:25:46, skipping insertion in model container [2021-05-06 08:25:46,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 08:25:46" (3/4) ... [2021-05-06 08:25:46,872 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42952584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:25:46, skipping insertion in model container [2021-05-06 08:25:46,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 08:25:46" (4/4) ... [2021-05-06 08:25:46,872 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_unwindbound10.cJordan [2021-05-06 08:25:46,876 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 08:25:46,878 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 08:25:46,889 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 08:25:46,900 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 08:25:46,900 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 08:25:46,900 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 08:25:46,901 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 08:25:46,901 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 08:25:46,901 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 08:25:46,901 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 08:25:46,901 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 08:25:46,909 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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) [2021-05-06 08:25:46,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 08:25:46,913 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:46,914 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:46,914 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:46,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:46,917 INFO L82 PathProgramCache]: Analyzing trace with hash 734203501, now seen corresponding path program 1 times [2021-05-06 08:25:46,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:46,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254175424] [2021-05-06 08:25:46,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:47,003 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:47,003 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078681328] [2021-05-06 08:25:47,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:47,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:47,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 1 conjunts are in the unsatisfiable core [2021-05-06 08:25:47,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 08:25:47,182 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:47,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254175424] [2021-05-06 08:25:47,183 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:47,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078681328] [2021-05-06 08:25:47,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078681328] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:25:47,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:25:47,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-05-06 08:25:47,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991753753] [2021-05-06 08:25:47,187 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-05-06 08:25:47,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:47,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-05-06 08:25:47,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-06 08:25:47,196 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 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 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 08:25:47,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:47,205 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-05-06 08:25:47,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-05-06 08:25:47,205 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 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 22 [2021-05-06 08:25:47,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:47,210 INFO L225 Difference]: With dead ends: 30 [2021-05-06 08:25:47,210 INFO L226 Difference]: Without dead ends: 25 [2021-05-06 08:25:47,210 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-05-06 08:25:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-06 08:25:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-06 08:25:47,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 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) [2021-05-06 08:25:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2021-05-06 08:25:47,229 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 22 [2021-05-06 08:25:47,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:47,230 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2021-05-06 08:25:47,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 08:25:47,230 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2021-05-06 08:25:47,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 08:25:47,231 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:47,231 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:47,443 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-05-06 08:25:47,444 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:47,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:47,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1669026344, now seen corresponding path program 1 times [2021-05-06 08:25:47,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:47,450 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476082997] [2021-05-06 08:25:47,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:47,485 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:47,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137465499] [2021-05-06 08:25:47,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:47,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-06 08:25:47,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:47,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:47,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:47,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:47,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:47,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 08:25:47,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:47,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476082997] [2021-05-06 08:25:47,615 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:47,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137465499] [2021-05-06 08:25:47,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137465499] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:25:47,615 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:25:47,615 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 08:25:47,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896443161] [2021-05-06 08:25:47,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 08:25:47,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:47,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 08:25:47,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 08:25:47,617 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 08:25:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:47,625 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2021-05-06 08:25:47,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 08:25:47,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2021-05-06 08:25:47,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:47,626 INFO L225 Difference]: With dead ends: 27 [2021-05-06 08:25:47,626 INFO L226 Difference]: Without dead ends: 27 [2021-05-06 08:25:47,627 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 08:25:47,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-06 08:25:47,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-05-06 08:25:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 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) [2021-05-06 08:25:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-05-06 08:25:47,630 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 23 [2021-05-06 08:25:47,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:47,631 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-05-06 08:25:47,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 08:25:47,631 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-05-06 08:25:47,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-06 08:25:47,631 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:47,632 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:47,853 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:47,854 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:47,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:47,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1667953868, now seen corresponding path program 1 times [2021-05-06 08:25:47,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:47,854 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336830428] [2021-05-06 08:25:47,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:47,873 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:47,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628397355] [2021-05-06 08:25:47,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:47,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 08:25:47,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:47,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:47,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:47,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:48,006 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 08:25:48,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:48,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336830428] [2021-05-06 08:25:48,006 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:48,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628397355] [2021-05-06 08:25:48,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628397355] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 08:25:48,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 08:25:48,007 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 08:25:48,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101850899] [2021-05-06 08:25:48,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 08:25:48,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:48,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 08:25:48,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 08:25:48,008 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 08:25:48,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:48,338 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2021-05-06 08:25:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 08:25:48,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2021-05-06 08:25:48,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:48,339 INFO L225 Difference]: With dead ends: 37 [2021-05-06 08:25:48,339 INFO L226 Difference]: Without dead ends: 37 [2021-05-06 08:25:48,339 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 08:25:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-06 08:25:48,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-05-06 08:25:48,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 08:25:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2021-05-06 08:25:48,344 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 23 [2021-05-06 08:25:48,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:48,344 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2021-05-06 08:25:48,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-05-06 08:25:48,344 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2021-05-06 08:25:48,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-06 08:25:48,345 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:48,345 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:48,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:48,557 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:48,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:48,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1179905874, now seen corresponding path program 1 times [2021-05-06 08:25:48,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:48,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586252101] [2021-05-06 08:25:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:48,568 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:48,568 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1073692320] [2021-05-06 08:25:48,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:48,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 08:25:48,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:48,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:48,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:48,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 08:25:48,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:48,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586252101] [2021-05-06 08:25:48,775 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:48,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073692320] [2021-05-06 08:25:48,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073692320] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:25:48,775 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:25:48,776 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 08:25:48,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16549722] [2021-05-06 08:25:48,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 08:25:48,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:48,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 08:25:48,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 08:25:48,777 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 08:25:48,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:48,839 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-05-06 08:25:48,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 08:25:48,840 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2021-05-06 08:25:48,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:48,840 INFO L225 Difference]: With dead ends: 41 [2021-05-06 08:25:48,840 INFO L226 Difference]: Without dead ends: 38 [2021-05-06 08:25:48,841 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 48.6ms TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-05-06 08:25:48,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-06 08:25:48,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2021-05-06 08:25:48,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-06 08:25:48,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-05-06 08:25:48,854 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 29 [2021-05-06 08:25:48,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:48,854 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-05-06 08:25:48,855 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-05-06 08:25:48,855 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-05-06 08:25:48,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-05-06 08:25:48,856 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:48,857 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:49,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:49,074 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:49,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:49,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1668946595, now seen corresponding path program 1 times [2021-05-06 08:25:49,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:49,075 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235907578] [2021-05-06 08:25:49,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:49,084 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:49,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099160900] [2021-05-06 08:25:49,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:49,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:49,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 08:25:49,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:49,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 08:25:49,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:49,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235907578] [2021-05-06 08:25:49,255 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:49,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099160900] [2021-05-06 08:25:49,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099160900] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:25:49,255 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:25:49,255 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-06 08:25:49,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122106896] [2021-05-06 08:25:49,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 08:25:49,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:49,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 08:25:49,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-05-06 08:25:49,257 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 08:25:49,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:49,289 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-06 08:25:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 08:25:49,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2021-05-06 08:25:49,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:49,291 INFO L225 Difference]: With dead ends: 38 [2021-05-06 08:25:49,291 INFO L226 Difference]: Without dead ends: 38 [2021-05-06 08:25:49,291 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 12.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 08:25:49,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-06 08:25:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-05-06 08:25:49,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 26 states have internal predecessors, (29), 7 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-06 08:25:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-05-06 08:25:49,297 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 32 [2021-05-06 08:25:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:49,297 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-05-06 08:25:49,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-05-06 08:25:49,298 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-05-06 08:25:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-06 08:25:49,298 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:49,298 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:49,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:49,517 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:49,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:49,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1377493560, now seen corresponding path program 2 times [2021-05-06 08:25:49,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:49,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051752839] [2021-05-06 08:25:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:49,527 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:49,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661172912] [2021-05-06 08:25:49,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:49,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 08:25:49,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 08:25:49,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 08:25:49,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:49,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 08:25:49,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:49,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051752839] [2021-05-06 08:25:49,718 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:49,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661172912] [2021-05-06 08:25:49,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661172912] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:25:49,718 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:25:49,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 08:25:49,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547856883] [2021-05-06 08:25:49,718 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 08:25:49,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:49,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 08:25:49,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-05-06 08:25:49,719 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 08:25:49,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:49,759 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-05-06 08:25:49,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 08:25:49,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 41 [2021-05-06 08:25:49,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:49,761 INFO L225 Difference]: With dead ends: 47 [2021-05-06 08:25:49,761 INFO L226 Difference]: Without dead ends: 47 [2021-05-06 08:25:49,761 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 20.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-05-06 08:25:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-06 08:25:49,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-05-06 08:25:49,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.121212121212121) internal successors, (37), 33 states have internal predecessors, (37), 8 states have call successors, (8), 7 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-05-06 08:25:49,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-05-06 08:25:49,764 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 41 [2021-05-06 08:25:49,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:49,764 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-05-06 08:25:49,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-05-06 08:25:49,764 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-05-06 08:25:49,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-06 08:25:49,765 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:49,765 INFO L523 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:49,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:49,983 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:49,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:49,984 INFO L82 PathProgramCache]: Analyzing trace with hash 489214531, now seen corresponding path program 3 times [2021-05-06 08:25:49,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:49,984 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583397021] [2021-05-06 08:25:49,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:50,001 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:50,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023781772] [2021-05-06 08:25:50,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:50,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-06 08:25:50,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 08:25:50,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 08:25:50,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:50,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 08:25:50,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:50,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583397021] [2021-05-06 08:25:50,301 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:50,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023781772] [2021-05-06 08:25:50,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023781772] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:25:50,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:25:50,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 08:25:50,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243457400] [2021-05-06 08:25:50,302 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 08:25:50,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:50,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 08:25:50,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-05-06 08:25:50,302 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-06 08:25:50,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:50,363 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-05-06 08:25:50,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-06 08:25:50,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 50 [2021-05-06 08:25:50,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:50,364 INFO L225 Difference]: With dead ends: 56 [2021-05-06 08:25:50,364 INFO L226 Difference]: Without dead ends: 56 [2021-05-06 08:25:50,364 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-05-06 08:25:50,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-05-06 08:25:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-05-06 08:25:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 9 states have call successors, (9), 8 states have call predecessors, (9), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 08:25:50,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-05-06 08:25:50,367 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 50 [2021-05-06 08:25:50,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:50,367 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-05-06 08:25:50,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 6 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-05-06 08:25:50,368 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-05-06 08:25:50,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-06 08:25:50,368 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:50,368 INFO L523 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:50,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:50,587 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:50,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:50,588 INFO L82 PathProgramCache]: Analyzing trace with hash -906969448, now seen corresponding path program 4 times [2021-05-06 08:25:50,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:50,588 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675049440] [2021-05-06 08:25:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:50,595 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:50,595 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45681413] [2021-05-06 08:25:50,595 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:50,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 08:25:50,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 08:25:50,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 08:25:50,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:50,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 08:25:50,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:50,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675049440] [2021-05-06 08:25:50,940 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:50,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45681413] [2021-05-06 08:25:50,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45681413] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:25:50,940 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:25:50,940 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-06 08:25:50,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656021515] [2021-05-06 08:25:50,941 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 08:25:50,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:50,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 08:25:50,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-05-06 08:25:50,942 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-06 08:25:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:51,008 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2021-05-06 08:25:51,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-06 08:25:51,009 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) Word has length 59 [2021-05-06 08:25:51,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:51,010 INFO L225 Difference]: With dead ends: 65 [2021-05-06 08:25:51,010 INFO L226 Difference]: Without dead ends: 65 [2021-05-06 08:25:51,010 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-05-06 08:25:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-05-06 08:25:51,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-05-06 08:25:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 47 states have (on average 1.127659574468085) internal successors, (53), 47 states have internal predecessors, (53), 10 states have call successors, (10), 9 states have call predecessors, (10), 7 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-05-06 08:25:51,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-05-06 08:25:51,013 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 59 [2021-05-06 08:25:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:51,014 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-05-06 08:25:51,014 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 7 states have call successors, (9), 7 states have call predecessors, (9), 5 states have return successors, (7), 5 states have call predecessors, (7), 6 states have call successors, (7) [2021-05-06 08:25:51,014 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-05-06 08:25:51,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-06 08:25:51,015 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:51,015 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:51,234 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-05-06 08:25:51,235 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:51,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1572135395, now seen corresponding path program 5 times [2021-05-06 08:25:51,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:51,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031667917] [2021-05-06 08:25:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:51,244 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:51,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1103837215] [2021-05-06 08:25:51,244 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:51,304 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-06 08:25:51,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 08:25:51,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 08:25:51,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:51,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:51,447 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 08:25:51,448 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:51,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031667917] [2021-05-06 08:25:51,448 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:51,448 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103837215] [2021-05-06 08:25:51,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103837215] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:25:51,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:25:51,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-06 08:25:51,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610325828] [2021-05-06 08:25:51,448 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-06 08:25:51,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:51,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-06 08:25:51,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-05-06 08:25:51,449 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-05-06 08:25:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:51,527 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2021-05-06 08:25:51,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-06 08:25:51,527 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) Word has length 68 [2021-05-06 08:25:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:51,528 INFO L225 Difference]: With dead ends: 74 [2021-05-06 08:25:51,528 INFO L226 Difference]: Without dead ends: 74 [2021-05-06 08:25:51,528 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 52.5ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-05-06 08:25:51,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-05-06 08:25:51,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-05-06 08:25:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.1296296296296295) internal successors, (61), 54 states have internal predecessors, (61), 11 states have call successors, (11), 10 states have call predecessors, (11), 8 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 08:25:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-05-06 08:25:51,532 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 68 [2021-05-06 08:25:51,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:51,532 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-05-06 08:25:51,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 8 states have call successors, (10), 8 states have call predecessors, (10), 6 states have return successors, (8), 6 states have call predecessors, (8), 7 states have call successors, (8) [2021-05-06 08:25:51,532 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-05-06 08:25:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-06 08:25:51,533 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:51,533 INFO L523 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:51,750 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:51,751 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:51,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:51,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1651262200, now seen corresponding path program 6 times [2021-05-06 08:25:51,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:51,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145725382] [2021-05-06 08:25:51,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:51,758 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:51,758 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924487593] [2021-05-06 08:25:51,758 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:51,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-06 08:25:51,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 08:25:51,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-06 08:25:51,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:52,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,207 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 12 proven. 147 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 08:25:52,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:52,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145725382] [2021-05-06 08:25:52,207 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:52,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924487593] [2021-05-06 08:25:52,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924487593] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:25:52,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:25:52,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-06 08:25:52,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472257982] [2021-05-06 08:25:52,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-06 08:25:52,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:52,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-06 08:25:52,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-05-06 08:25:52,208 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2021-05-06 08:25:52,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:52,327 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2021-05-06 08:25:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-06 08:25:52,328 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) Word has length 77 [2021-05-06 08:25:52,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:52,329 INFO L225 Difference]: With dead ends: 83 [2021-05-06 08:25:52,329 INFO L226 Difference]: Without dead ends: 83 [2021-05-06 08:25:52,329 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 114.5ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-05-06 08:25:52,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-06 08:25:52,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-05-06 08:25:52,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 61 states have internal predecessors, (69), 12 states have call successors, (12), 11 states have call predecessors, (12), 9 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 08:25:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 91 transitions. [2021-05-06 08:25:52,332 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 91 transitions. Word has length 77 [2021-05-06 08:25:52,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:52,333 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 91 transitions. [2021-05-06 08:25:52,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 9 states have call successors, (11), 9 states have call predecessors, (11), 7 states have return successors, (9), 7 states have call predecessors, (9), 8 states have call successors, (9) [2021-05-06 08:25:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 91 transitions. [2021-05-06 08:25:52,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-06 08:25:52,349 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:52,349 INFO L523 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:52,549 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:52,550 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:52,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:52,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1720170109, now seen corresponding path program 7 times [2021-05-06 08:25:52,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:52,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494351979] [2021-05-06 08:25:52,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:52,557 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:52,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868634817] [2021-05-06 08:25:52,557 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 08:25:52,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-06 08:25:52,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:52,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:52,859 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 14 proven. 203 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 08:25:52,859 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:52,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494351979] [2021-05-06 08:25:52,859 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:52,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868634817] [2021-05-06 08:25:52,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868634817] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:25:52,859 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:25:52,859 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-06 08:25:52,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173386780] [2021-05-06 08:25:52,860 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-06 08:25:52,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:52,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-06 08:25:52,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-05-06 08:25:52,860 INFO L87 Difference]: Start difference. First operand 83 states and 91 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2021-05-06 08:25:52,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:52,956 INFO L93 Difference]: Finished difference Result 92 states and 101 transitions. [2021-05-06 08:25:52,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-06 08:25:52,956 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) Word has length 86 [2021-05-06 08:25:52,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:52,957 INFO L225 Difference]: With dead ends: 92 [2021-05-06 08:25:52,957 INFO L226 Difference]: Without dead ends: 92 [2021-05-06 08:25:52,957 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 86.0ms TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-05-06 08:25:52,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-06 08:25:52,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-05-06 08:25:52,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 68 states have internal predecessors, (77), 13 states have call successors, (13), 12 states have call predecessors, (13), 10 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 08:25:52,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2021-05-06 08:25:52,961 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 86 [2021-05-06 08:25:52,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:52,961 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2021-05-06 08:25:52,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 states have internal predecessors, (61), 10 states have call successors, (12), 10 states have call predecessors, (12), 8 states have return successors, (10), 8 states have call predecessors, (10), 9 states have call successors, (10) [2021-05-06 08:25:52,961 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2021-05-06 08:25:52,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-06 08:25:52,962 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:52,962 INFO L523 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:53,180 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-05-06 08:25:53,180 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:53,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:53,181 INFO L82 PathProgramCache]: Analyzing trace with hash -327979176, now seen corresponding path program 8 times [2021-05-06 08:25:53,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:53,181 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652187988] [2021-05-06 08:25:53,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:53,186 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:53,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716995686] [2021-05-06 08:25:53,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:53,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 08:25:53,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 08:25:53,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-06 08:25:53,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:25:53,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:25:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 16 proven. 268 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 08:25:53,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:25:53,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652187988] [2021-05-06 08:25:53,471 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:25:53,471 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716995686] [2021-05-06 08:25:53,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716995686] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:25:53,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:25:53,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-06 08:25:53,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936619622] [2021-05-06 08:25:53,471 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-06 08:25:53,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:25:53,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-06 08:25:53,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-05-06 08:25:53,472 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2021-05-06 08:25:53,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:25:53,589 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-05-06 08:25:53,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-06 08:25:53,590 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) Word has length 95 [2021-05-06 08:25:53,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:25:53,590 INFO L225 Difference]: With dead ends: 101 [2021-05-06 08:25:53,590 INFO L226 Difference]: Without dead ends: 101 [2021-05-06 08:25:53,591 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 99.7ms TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-05-06 08:25:53,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-05-06 08:25:53,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-05-06 08:25:53,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 75 states have (on average 1.1333333333333333) internal successors, (85), 75 states have internal predecessors, (85), 14 states have call successors, (14), 13 states have call predecessors, (14), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 08:25:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2021-05-06 08:25:53,594 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 95 [2021-05-06 08:25:53,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:25:53,594 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2021-05-06 08:25:53,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 11 states have internal predecessors, (68), 11 states have call successors, (13), 11 states have call predecessors, (13), 9 states have return successors, (11), 9 states have call predecessors, (11), 10 states have call successors, (11) [2021-05-06 08:25:53,594 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2021-05-06 08:25:53,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-05-06 08:25:53,595 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:25:53,595 INFO L523 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:25:53,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:25:53,809 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:25:53,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:25:53,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1572009693, now seen corresponding path program 9 times [2021-05-06 08:25:53,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:25:53,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140400439] [2021-05-06 08:25:53,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:25:53,815 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:25:53,815 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1930324190] [2021-05-06 08:25:53,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:26:27,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-06 08:26:27,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 08:26:27,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-06 08:26:27,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 08:26:27,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 08:26:27,620 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 18 proven. 342 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 08:26:27,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 08:26:27,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140400439] [2021-05-06 08:26:27,620 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 08:26:27,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930324190] [2021-05-06 08:26:27,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930324190] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 08:26:27,620 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 08:26:27,620 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-05-06 08:26:27,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140984931] [2021-05-06 08:26:27,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-06 08:26:27,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 08:26:27,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-06 08:26:27,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-05-06 08:26:27,623 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-05-06 08:26:27,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 08:26:27,740 INFO L93 Difference]: Finished difference Result 110 states and 121 transitions. [2021-05-06 08:26:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-06 08:26:27,741 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) Word has length 104 [2021-05-06 08:26:27,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 08:26:27,742 INFO L225 Difference]: With dead ends: 110 [2021-05-06 08:26:27,742 INFO L226 Difference]: Without dead ends: 110 [2021-05-06 08:26:27,742 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 109.5ms TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-05-06 08:26:27,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-05-06 08:26:27,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-05-06 08:26:27,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 82 states have (on average 1.1341463414634145) internal successors, (93), 82 states have internal predecessors, (93), 15 states have call successors, (15), 14 states have call predecessors, (15), 12 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 08:26:27,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2021-05-06 08:26:27,746 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 104 [2021-05-06 08:26:27,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 08:26:27,746 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2021-05-06 08:26:27,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 12 states have call successors, (14), 12 states have call predecessors, (14), 10 states have return successors, (12), 10 states have call predecessors, (12), 11 states have call successors, (12) [2021-05-06 08:26:27,746 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2021-05-06 08:26:27,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-06 08:26:27,747 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 08:26:27,747 INFO L523 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 08:26:27,964 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-06 08:26:27,964 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 08:26:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 08:26:27,965 INFO L82 PathProgramCache]: Analyzing trace with hash 191644600, now seen corresponding path program 10 times [2021-05-06 08:26:27,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 08:26:27,965 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808956978] [2021-05-06 08:26:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 08:26:27,971 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 08:26:27,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2139801977] [2021-05-06 08:26:27,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:26:28,041 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 08:26:28,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-05-06 08:26:28,041 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 08:26:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-06 08:26:28,132 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-06 08:26:28,231 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-06 08:26:28,231 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-06 08:26:28,449 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 08:26:28,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 08:26:28 BasicIcfg [2021-05-06 08:26:28,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 08:26:28,492 INFO L168 Benchmark]: Toolchain (without parser) took 42208.88 ms. Allocated memory was 183.5 MB in the beginning and 228.6 MB in the end (delta: 45.1 MB). Free memory was 148.2 MB in the beginning and 103.5 MB in the end (delta: 44.7 MB). Peak memory consumption was 89.9 MB. Max. memory is 8.0 GB. [2021-05-06 08:26:28,492 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 183.5 MB. Free memory is still 165.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 08:26:28,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.20 ms. Allocated memory is still 183.5 MB. Free memory was 148.0 MB in the beginning and 167.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-06 08:26:28,492 INFO L168 Benchmark]: Boogie Preprocessor took 37.10 ms. Allocated memory is still 183.5 MB. Free memory was 167.1 MB in the beginning and 165.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 08:26:28,492 INFO L168 Benchmark]: RCFGBuilder took 281.60 ms. Allocated memory is still 183.5 MB. Free memory was 165.6 MB in the beginning and 149.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-06 08:26:28,492 INFO L168 Benchmark]: IcfgTransformer took 11.93 ms. Allocated memory is still 183.5 MB. Free memory was 149.3 MB in the beginning and 148.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 08:26:28,492 INFO L168 Benchmark]: TraceAbstraction took 41622.80 ms. Allocated memory was 183.5 MB in the beginning and 228.6 MB in the end (delta: 45.1 MB). Free memory was 147.7 MB in the beginning and 103.5 MB in the end (delta: 44.2 MB). Peak memory consumption was 90.4 MB. Max. memory is 8.0 GB. [2021-05-06 08:26:28,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 183.5 MB. Free memory is still 165.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 250.20 ms. Allocated memory is still 183.5 MB. Free memory was 148.0 MB in the beginning and 167.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.10 ms. Allocated memory is still 183.5 MB. Free memory was 167.1 MB in the beginning and 165.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 281.60 ms. Allocated memory is still 183.5 MB. Free memory was 165.6 MB in the beginning and 149.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * IcfgTransformer took 11.93 ms. Allocated memory is still 183.5 MB. Free memory was 149.3 MB in the beginning and 148.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 41622.80 ms. Allocated memory was 183.5 MB in the beginning and 228.6 MB in the end (delta: 45.1 MB). Free memory was 147.7 MB in the beginning and 103.5 MB in the end (delta: 44.2 MB). Peak memory consumption was 90.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [\old(counter)=28, counter=0] [L21] int A, R; [L22] long long u, v, r; [L23] A = __VERIFIER_nondet_int() [L24] R = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L26] RET assume_abort_if_not(((long long) R - 1) * ((long long) R - 1) < A) VAL [\old(counter)=0, A=777925, counter=0, R=883] [L28] CALL assume_abort_if_not(A % 2 == 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L28] RET assume_abort_if_not(A % 2 == 1) VAL [\old(counter)=0, A=777925, counter=0, R=883] [L30] u = ((long long) 2 * R) + 1 [L31] v = 1 [L32] r = ((long long) R * R) - A VAL [\old(counter)=0, A=777925, counter=0, R=883, r=1764, u=1767, v=1] [L34] EXPR counter++ VAL [\old(counter)=0, A=777925, counter=1, counter++=0, r=1764, R=883, u=1767, v=1] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=777925, counter=1, R=883, r=1764, u=1767, v=1] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=777925, counter=1, r=1764, R=883, u=1767, v=1] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=777925, counter=1, R=883, r=1763, u=1767, v=3] [L34] EXPR counter++ VAL [\old(counter)=0, A=777925, counter=2, counter++=1, R=883, r=1763, u=1767, v=3] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=2] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=2] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=777925, counter=2, r=1763, R=883, u=1767, v=3] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=777925, counter=2, r=1763, R=883, u=1767, v=3] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=777925, counter=2, R=883, r=1760, u=1767, v=5] [L34] EXPR counter++ VAL [\old(counter)=0, A=777925, counter=3, counter++=2, R=883, r=1760, u=1767, v=5] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=3] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=3] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=777925, counter=3, R=883, r=1760, u=1767, v=5] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=777925, counter=3, R=883, r=1760, u=1767, v=5] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=777925, counter=3, R=883, r=1755, u=1767, v=7] [L34] EXPR counter++ VAL [\old(counter)=0, A=777925, counter=4, counter++=3, R=883, r=1755, u=1767, v=7] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=4] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=4] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=777925, counter=4, R=883, r=1755, u=1767, v=7] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=777925, counter=4, r=1755, R=883, u=1767, v=7] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=777925, counter=4, R=883, r=1748, u=1767, v=9] [L34] EXPR counter++ VAL [\old(counter)=0, A=777925, counter=5, counter++=4, r=1748, R=883, u=1767, v=9] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=5] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=5] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=777925, counter=5, R=883, r=1748, u=1767, v=9] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=777925, counter=5, r=1748, R=883, u=1767, v=9] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=777925, counter=5, R=883, r=1739, u=1767, v=11] [L34] EXPR counter++ VAL [\old(counter)=0, A=777925, counter=6, counter++=5, R=883, r=1739, u=1767, v=11] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=6] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=6] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=777925, counter=6, R=883, r=1739, u=1767, v=11] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=777925, counter=6, r=1739, R=883, u=1767, v=11] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=777925, counter=6, R=883, r=1728, u=1767, v=13] [L34] EXPR counter++ VAL [\old(counter)=0, A=777925, counter=7, counter++=6, R=883, r=1728, u=1767, v=13] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=7] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=7] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=777925, counter=7, r=1728, R=883, u=1767, v=13] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=777925, counter=7, r=1728, R=883, u=1767, v=13] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=777925, counter=7, R=883, r=1715, u=1767, v=15] [L34] EXPR counter++ VAL [\old(counter)=0, A=777925, counter=8, counter++=7, r=1715, R=883, u=1767, v=15] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=8] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=8] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=777925, counter=8, R=883, r=1715, u=1767, v=15] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=777925, counter=8, r=1715, R=883, u=1767, v=15] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=777925, counter=8, r=1700, R=883, u=1767, v=17] [L34] EXPR counter++ VAL [\old(counter)=0, A=777925, counter=9, counter++=8, R=883, r=1700, u=1767, v=17] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=9] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=9] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=777925, counter=9, r=1700, R=883, u=1767, v=17] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=777925, counter=9, R=883, r=1700, u=1767, v=17] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=777925, counter=9, R=883, r=1683, u=1767, v=19] [L34] EXPR counter++ VAL [\old(counter)=0, A=777925, counter=10, counter++=9, R=883, r=1683, u=1767, v=19] [L34] COND TRUE counter++<10 [L35] CALL __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=1, \old(counter)=0, counter=10] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=10] [L35] RET __VERIFIER_assert(4*(A+r) == u*u - v*v - 2*u + 2*v) VAL [\old(counter)=0, A=777925, counter=10, r=1683, R=883, u=1767, v=19] [L36] COND FALSE !(!(r != 0)) VAL [\old(counter)=0, A=777925, counter=10, R=883, r=1683, u=1767, v=19] [L38] COND TRUE r > 0 [L39] r = r - v [L40] v = v + 2 VAL [\old(counter)=0, A=777925, counter=10, r=1664, R=883, u=1767, v=21] [L34] EXPR counter++ VAL [\old(counter)=0, A=777925, counter=11, counter++=10, R=883, r=1664, u=1767, v=21] [L34] COND FALSE !(counter++<10) [L48] CALL __VERIFIER_assert(((long long) 4*A) == u*u - v*v - 2*u + 2*v) VAL [\old(cond)=0, \old(counter)=0, counter=11] [L12] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] [L14] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41550.9ms, OverallIterations: 14, TraceHistogramMax: 11, EmptinessCheckTime: 31.0ms, AutomataDifference: 1176.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 385 SDtfs, 258 SDslu, 928 SDs, 0 SdLazy, 357 SolverSat, 174 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 674.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 745 GetRequests, 622 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 649.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=13, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 62.8ms AutomataMinimizationTime, 13 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 132.4ms SsaConstructionTime, 34181.6ms SatisfiabilityAnalysisTime, 1788.2ms InterpolantComputationTime, 822 NumberOfCodeBlocks, 822 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 696 ConstructedInterpolants, 0 QuantifiedInterpolants, 1974 SizeOfPredicates, 60 NumberOfNonLiveVariables, 2558 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 143/1314 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 proved your program to be incorrect! Received shutdown request...